Mabel x Dipper [fanfic] [FM] [incest]

10.06.20xx

Dear Diary, today Dipper accidentally came into the room while I was changing. I had just removed my bra. I told him to not be shy and come in, I mean he’s seen me naked before! He even asked if I’m fine with it. Silly goose, he just kept walking all flustered while looking at my nippies. My nippies were dead-on looking back at him too, though! Haha. He grabbed a nearby book and covered his face with it and said they were nevertheless distracting. I guess my puppies are just too cutesies. Just when I put on my sweater, he asked whether they aren’t sensitive to the cloth. I told this double silly that his are probably just as sensitive as mine, because we’re twins and all. To prove it to him I waited until he got all dreamy about his book and surprise bit him into one of his nipples. He was so surprised and had such a sour expression on his face, it was priceless. Just thinking about it now makes it hard to handle my pen from the laughter. But I couldn’t have imagined what happened after; this is why I’m telling you this too, dear diary!

After some time passed and I was relaxing on the couch he suddenly appeared next to me and with the same sour and hurt expression as before on his face he opened his big mouth and bit my nipple. I left out a moan, because it kinda tickled and tingled me for some reason. We were both surprised. But the rest of the day was F U N! Wooh!

11.06.20xx

Dear diario, my gosh… How do I even write this down, uh…? I started playing with my nipples yesterday night in bed, because I wanted to TEST if I would feel the same sensation and see what happens after. After I circled my fingers around my nipples, I felt that nice tingling again. It felt even better when I imagined Dipper doing it. But soon I noticed that my panties were wet. I wondered if I had forgotten to take a leak before bedtime, so I put my hand there and gave it a smell test. But just as I put my hand there, I felt the tingly feeling even stronger as I touched my privates there. I couldn’t help it but play around with my fingers inserted into my panties until I felt very strange and my heartbeat was like crazy. Just then Dipper moved in bed and some book fell down, which scared me, because I thought he was awake, and I kept thinking “OMG what if he noticed that I’m doing weird stuff”. I eventually fell asleep. We didn’t do much today, except uncle Stan promised us to go to the beach tomorrow! Yay! Hype!

13.06.20xx

Dear diarhino, so much happened yesterday that I was too tired to write anything. Argh! I’ll start with the morning! So, we went to the beach, right. But it was so boring, both of our swimsuits were so darn BORING! Uncle Stan gave us some really old-fashioned ones, and neither me nor Dipper wanted to wear them. There was a nudist beach nearby though. I think it’s the type of beach where people go and are completely without clothes, apparently it’s some kinda culture, just like eating healthy and all that. But this one seemed way better than both eating healthy and wearing these old rags.

Dipper was surprisingly bold, he was the one to make an excuse about how this beach was too crowded and whatnot, so uncle Stan just told us to go wherever we wanted, while he stayed. When we were near the nudist one, he actually got nervous though, just as he dropped his shirt and slowly pulled down his boxers. But he seemed to calm down after I told him that his peener looked fine while being free as a bird. His eyes were glued to me while I got out of my clothes, I even saw something slightly twitch down there… it was a cute motion. To lighten the mood, I pulled my panties over my head and told him we could always wear a mask if he didn’t want people to see our faces. We both laughed out loud because of that and went out there with confidence, like a boss. Luckily there was barely anyone there and I jumped straight into the water, while laying on my back and trying to stay on the surface I waved to Dipper, so he comes in as well. We spent a nice day swimming.

At night however, while he was in bed, and we were both talking about how great our day was, I casually laid it out there for him to hear, that: I loved him. Not the sister-brother type of love either, because I felt like it was something more than that lately… Ugh, but even after telling him, he was soooo silent! It took him minutes until he finally let out those gummy bear chocolate sweet words, that he also had feelings for me. Mostly after seeing me naked…(teehee, I’m such an adult! my curves must’ve hypnotised him or something). He sounded a bit ashamed, so I slid right into his bed and told him everything’s fine and that we can kiss if he’s okay with it. He agreed. HE AGREED. And it was such a heart throbbing moment when our lips touched, it seemed like rainbows had crashed through the windows and unicorns took a bath in hot chocolate. We both fell asleep shortly after that… Today we also kissed. While nobody looked, behind a tree. For quite long too.

25.06.20xx

We’ve kissed almost everywhere now. It’s like one big achievement hunt in a game. Each kiss is so sweet and makes me thirst for more. Dear diary, I probably won’t even fill your pages for some time, I’m just too busy pressing my lips against Dipper’s.

17.09.20xx

We’ve been going to school for more than a week now. It would be soo boring without all the kissing we do. Dear diary, we kissed in so many places at school: behind some trees, in the bathroom stalls, during P.E. inside the locker room and the equipment room, empty classes, even in a badly lit hallway when there was nobody there.

Just the other day after lunch, I pretended I needed to go to the toilet to get away from my friends, but I actually went to a storeroom opposite to it. It’s usually empty and left unlocked for some reason. Dipper was the one to notice, he’s been getting quite needy, he needs a kissy in the morning and in the evening, but mostly during school. Not as if I was complaining, I also need his kissies. I had to wait for him for a whole five minutes before he finally rushed in, panting. He said he had P.E. before lunch and still barely feels his legs. My eyes sparkled up and I gave him a big shove. He sat down right away on some bucket that I turned upside down to sit on while waiting. He looked so surprised… and so powerless. Hehe. I leaned forward and gave him a big smooch, he grabbed my head and also started smooching me. He even gently caressed my hair while I did his. We kept kissing until we overheard my friends walking down the hall, searching for me. Dipper left the room, so he was behind them, but then quickly paced ahead of them and kept their attention by saying some random stuff about how he hasn’t seen me at all today. Yeah, right, sweetie. I used this opening to quickly swoosh into the toilets. Then pretended to casually walk out, telling them all how relieved and refreshed I felt. Dipper almost burst out laughing.

I also occasionally tease Dipper by showing him my butt by bending down for something when he’s looking. Sometimes I flash my puppies for him, when we’re at home and are studying together, then we kiss. We even started using our tongues recently, his drool is so tasty. And once we mix our fluids it’s so easy to tongue-box, we just can’t stop. I’d try to press his tongue down with mine, but then he just slides right out under it and has me pinned, then I usually suck his tongue to ascertain my dominance, but his face gets so flushed when I do it. He seems to really enjoy that move…

05.10.20xx

We’ve been having so much fun for the past few months, but it almost seems like my body is telling me I want more. Just recently we watched a scary movie together, because it’s flipping HALLOWEEN soon. I lay on his legs on the couch and occasionally opened my sweater to tease him with showing him my nipples. I only had this long sweater on, it’s so comfy, warm and lets me do playful things for Dipper, but it got a bit out of hand. I was on commando that day and when some really scary part of the movie came on, I freaked out and tried to grab for the remote really hard and accidentally knocked it over. I had to bend over for it, but I forgot all about being commando, so my butthole and all was in full view for Dipper. I ended up freaking out even more. Dipper got red as a tomato though. After I calmed down, we laughed it off. I won’t chicken out today, however!

06.10.20xx

Diary, Dairy, Fairy? Yesterday our parents weren’t home, and I wore the same long sweater again, without wearing any panties AGAIN. Dipper came around to look for something to eat in the fridge. After he closed the fridge door, not finding what he looked for, I offered to help him. I bent over to pick up the sandwich I hid away. Now I stood there with my long sweater pulled up to my waist. He froze up completely.

After seeing my bum and all again, I could see his pants tent up. It happened a few times before when we kissed, but this time it was a big tent. My stuffed animals could go camping there, maybe even me… I spent the rest of the evening walking around like that and occasionally peeking towards him. His boner just wouldn’t go down. It was so funny, he seemed so embarrassed by it. But he just couldn’t look away, he even followed me around sometimes, pretending to look for a book or something else. It was so rad. I sat on the couch for a while after that. However, I soon felt uncomfortable because the sticky, wet stuff was coming out of me again and I even stained the couch. I went to the bathroom. Dipper had just gotten out too.

Inside I took off my sweater and was looking forward to a hot bath, but I touched myself THERE when I dropped my towel and leaned over to pick it up with my forearm. It felt very tingly. After all this time, that nice, tingly feeling was back again and it was wet, just like that time too. I decided to rub around that place again, imagining it’s Dipper’s fingers. As I stood there, I noticed Dipper had left his boxers in the “put dirty clothing here” basket. I resisted it a bit at first, but then I grabbed them and gave them a long whiff. It smelled like Dipper. But much stronger and it made my tingly sensation even stronger. I kept rubbing myself while inhaling his odour, it felt so musky and strong, somewhat manly, I guess? But then I decided that it wasn’t enough, I wanted to lick it too. There was something salty on it, it tasted a bit like salty chips, Dipper chips! After licking it clean, it was nice and wet, and I went ahead and rubbed it against my foo foo. After rubbing it stronger and stronger I started trembling and it felt as if a huge shockwave of all the pretty things in the world continually reverbed inside my body. My legs shook and the area under my belly felt as if it was a washing machine on full force. I lied there for a bit before gathering some strength to jump into the bath. It felt so nice, the hot water still tickled my sensitive parts, even my nipples felt the gentle touch of the water and the foam I made in the tub.

However, that was not the only new thing I experienced that night. Oh dear diary, it was so beautiful!

Dipper lay in his own bed and I could hear a slight hitting or maybe slapping? sound. He was going slowly and silently at first, but then it got a bit loud and I couldn’t help but giggle and give myself away. He then got all quiet, probably falling asleep because I had to wake him up with a little kissy when I snuck into his bed later.

I put my index finger in front of my lips, signalling to him to stay quiet. I grabbed one of his hands and led it down to my wet coochie. He seemed to understand, and I made him move his hand a little. It felt so good, much better than when I imagined him doing it, I guess some things are even better real than when they are only fantasy. The tingling sensation was much stronger, and the sticky stuff just kept leaking out, Dipper asked what it was, and I told him it’s my love juices, warm and wet because of how much I loved him. He got a bit embarrassed but eagerly continued making me feel good. After he got used to his hand being there, I explored his boxers with my hands, but I didn’t have to search for long. His junk was already stiff and pointing straight at me like a gun, I quickly freed it from its Bangladeshi cloth jail. It was so hard and even though I had looked at it at the beach before, it was still weird to touch. For starters it was a lot bigger now. The texture was actually sort of soft and the head coming out from the tube-like base was bigger and throbbing , unlike the lower parts. I tried squeezing his balls with my other hand too. They were so soft and felt very nice to touch actually! The balls inside reminded me of those squishy toys which have small objects swimming in some colored fluid. I had so much fun groping and exploring these new parts that I was only brought back to my senses when he exclaimed, he was about to come? To cum? I asked him what was about to come? He explained that if I kept stroking and caressing his parts white gooey stuff will come out. I got so excited! Is it gonna shoot it out? I asked. He said yes and I just kept playing with it. “At the tip” he explained further, so I put both my hands there. And really, he shook a bit and some hot gooey stuff came out and covered my hands. I felt his balls rise and fall back as the sticky stuff landed on my hand. It was so sticky and slimey, like a slime toy. I immediately pulled my hands up to my mouth and sucked some of it up, telling him that it’s salty, but just like him. I guess this was the same stuff I tasted from his boxers. It was fresh and a lot tastier like this, from the source hehe. From all the excitement I felt the tingling feeling suddenly burst out at once from my coochie, like a dam that’s about to explode. And soon, I had experienced the same feeling as I did in the bathroom. Such a blissful sensation, unicorns came flying in and carried both me and Dipper to faraway lands with rainbows and sweets everywhere. When I landed on planet Earth again and saw his hands covered in my juices, I told him to taste it too. He actually did, and said it was also somewhat salty and weird, just like me. Before he could try more I kissed him and we did some tongue-wrestling again, but this time both of us had some of our private liquids in our mouths as well. We mixed and mixed them, it felt a lot like a chemistry class, except it felt amazing and my heart wouldn’t stop beating like crazy. We stopped only once we were out of breath, then we hugged.

I went back to my bed after that, so our parents wouldn’t realise anything, if one happened to come in in the morning. Dipper fell asleep shortly after, I heard him taking deep breaths… but I… just kept licking his love goo, which had such an intriguing taste, and I even put some of it to my own private parts and rubbed myself with it again, until I got all tingly again, and I got all shaky. I probably fell asleep after that.

12.10.20xx

It’s been only a few days since then and it has been so awkward ever since, until last night, dear diario. It was enough to look into Dipper’s general direction and once he noticed me staring “POP” went an erection in his pants. It was very risky at school. I remember he just sat around, and it took him a long time to get up to walk… It’s really hard being a boy, I guess. My panties have been very wet too, but at least walking wasn’t so hard, in fact, it even felt good. My lips down there feel very good when they touch the wet panty fabric and my inner thighs…

Back to TOPIC! I mean even though boys have it harder, I didn’t want to make the next move, I wanted him to make it. He’s a MAN after all and all that… Well, last night after some random erections, he actually snuck into my bed. He was even bold enough to ask me if I was okay with trying the next step. I agreed, obviously, my heart just kept beating out of its place. My condition however, was that we should take a good, hard look at each other’s parts, with some dim lighting and all that romantic stuff.

We got into position, I was at his crotch and he at mine, so we could explore all we liked at the same time, this was his idea too. At close, his junk looked pretty big, it was a nice pinkish color at the top, otherwise it was the same color as Dipper in general. He pretty much said the same thing about mine, but it was pink and cute on the inside he said. He also found some dot like thing in there and he kept touching it carefully. The tingling from that was something else, I felt it all the way to the back of my head. I told him to keep doing just that. I tried kissing his part. He was surprised but said that it felt good. So I gave it a few more kissies and tried suckling on the top of it and tongue-wrestling the head. Dipper seemed to be in a lot of pleasure, so he decided to try kissing and suckling mine too. His tongue felt amazing as it circled around the small dot he had found. It made me feel so good, as his tongue twisted around there. I wanted to do something equal for him too. I remembered a classmate showing me a video once where a woman licked the butthole of a man, and he seemed to enjoy it, so I supposed that if he’s licking mine, I should lick his hole too. I put my tongue on his bumhole and started circling around it, but just after a few lickies, while I was still rubbing his peenie he sprayed his white goo out, it was even more than last time. As it sprayed my upper body and nipples I also climaxed, as adults call it, thanks to his lickies and kissies around the area of the lil’ dot. I felt very woozy, my head went numb and all I could feel was pleasure.

While I lay there, Dipper got on top of me and I saw his resurrected erection, which had gone soft and limp just a few seconds ago. He grabbed my legs and spread them apart. I covered my face and told him to be gentle. I put my legs on his and he held both my hands. We kissed again and I felt such a big urge for him to finally put it in. I wanted to feel his peener inside me, it looked so full of energy. I wanted it to tickle me from the inside. Shortly after he put the head of it against my coochie lips and slowly slid inside. At first, I felt a snapping feeling, but it didn’t hurt at all after that. In fact, it felt tenfold as good as the previous pleasures, his little dipper rubbed me on the inside and it tingled and as if scratching an itchy feel after a long time, oh it felt so good. He said he was about to cum, I told him to go ahead and do it, but he pulled out and even though spraying me full of it felt nice in its own way, I really hoped to experience getting filled by his love goo. His erection didn’t go down at all this time. I looked at it in awe and told him “ONE MORE TIME” as if on a roller coaster ride. He gladly reinserted it, but I hugged him with my legs this time, to make sure he wouldn’t pull it out.

I think I heard at school that that’s how babies are made, but… I wouldn’t mind having Dipper’s babies, hehe, I bet they would be as cute as him.

He was thrusting inside and it felt a lot different from touching myself, it felt a lot nicer, his penis was so stiff, yet so soft on my insides, going in deep and sending shockwaves of pleasure throughout my whole body. I played with my nipples too, and started feeling tingling from two places at once. Finally, Dipper kissed me and pinched my nipples with one of his hands. I wanted to be caressed forever by him like this. I felt as if we were melting into one being. Mapper? Dible? Whatever, it just felt so amazing, and then as if fireworks started shooting inside my head, I orgasmed, and I pulled my legs in together with him towards me. He came inside me. I felt his hot goo fill up my insides, once he pulled out, it started leaking out, but I didn’t want it to leak out, so I put my hands there to stop it and suckled on whatever managed to escape. He seemed very satisfied, but so was I… It was so beautiful, oh dear diary. I hope no one finds you, this will be a secret between you, me and Dipper. I may have to hide you somewhere and only take you out when I really want to cherish a memory longer and keep it written down.

1.11.20xx

Yesterday was Hallowoween! I got a large haul of tasties. I dressed up in a catsuit with a large fur coat and all that, my tail was purrfect! It was pretty much like a fursuit, good thing people don’t judge you on Halloween based on what you wear, except if you’re like Dipper and think you’re too old for candy hunting. The meme is old as uncle Stan, but my catsuit was rainbow colored and I couldn’t stop shouting “nyanya nyanya nyanyanyanya” while running. Too bad I didn’t leave any rainbow trails, but whatevs, it was super fun anyway.

Once I got home, I took off the cat helmet and shared some candies with Dipper. I still wanted to punish him somehow for not coming along. He liked my sweets, and I liked the tasty treats too, but I wanted an even tastier treat. I grabbed a candy bar and slowly inserted it between my lips, licking and suckling on it. Dipper was still busy talking to me about how many monster movies he’s watched, and how much artistic value some of the costumes have and whatnot, but he stopped once I bit one of his fingers in the same manner, I did with the candy bar. I saw an erection rise under his pants.

I took off my catsuit and revealed a much more mature version of it underneath. Nyahaha. He was speechless. I forced him to the ground, he lay on his back and I slowly undressed him. It was time for his punishment. I was like: “Mew’ve been a bad tomcat, Dipper. Nyai think you need to repay me for the candy.” He was silent, but his penis kept throbbing against my already wet coochie beneath the suit. I slid some of the suit out of the way and slid right on top of little Dipper Jr. I kept purring whenever I felt good, so pretty much all the time. Dipper liked it a lot, I noticed on his facial expressions of pure bliss. I started moving my hips and humped my bum against his legs. He wanted to grab my nipples, but I hissed at him and scratched his hand. “Use mewr little human hand on my little pussy down there, nyaa” I told him and he gladly abided. His penis kept throbbing a lot, but I was close too, I sat back a little and started to go with all my cat powers on the little mouse trapped in my pussy. It kept sliding in and out, I toyed with it until I finally orgasmed, and felt a hot torrent enter me from below. Dipper looked tired and very satisfied, but as he lay there below me, he looked so cozy and soft too. So I laid down on top of him and he interlocked my hands into his and at some point we fell asleep next to a pile of candy and the Halloween catsuit…

~~~~~~~~~~~~~~~~~~

Thanks for reading our story to the very end! If you enjoyed it please consider supporting us on [https://www.patreon.com/spation](https://www.patreon.com/spation)

We’ve got lots of great stories available for all supporters!

Source: reddit.com/r/Erotica/comments/uka1u1/mabel_x_dipper_fanfic_fm_incest