Sis gets a surprise in the middle of the night

In a night of deep sleep, I woke up suddenly. Not really sure what woke me up; I sat up and looked around. It was just 1:00 am. As I rolled over in bed I realized I had a hard-on in my underwear. A little surprised, I thought about maybe giving my hand another workout before rolling over and falling asleep. As my hand slid under the waistband of my briefs, I heard a noise that froze me. It sounded like it was downstairs. ‘Nobody should be up at this hour’ I thought to himself as I got up and strolled out of my room. It wasn’t fear that had my interest, it was curiosity.

I passed my sister’s room and was just going past my parent’s room when I heard the grunting noise again. I stopped and realized that it was coming from my parent’s room. The door was slightly open and I peered in. The light from the streetlight outside was shining enough into the room and I could see my mom rustling on the bed. I moved closer and opened the door a little more before I realized that my mother was on top of my dad, naked!

I stared as mom was bouncing up and down on my dad. It was my mom that was doing the grunting. I was amazed that I was watching my parents fuck. My hand had found its way down under my waistband of my briefs and I had my cock in hand. Slowly I was rubbing as I watched my mom’s tits bounce with every thrust she pushed down on my dad. My mom had a very sexy body for 37 years old.

I woke out of my stare and stroking as I heard my mom.

“Oh hun, I want you to fuck my ass.” She instructed my dad. “I want your hot cum in my ass, NOW!”

I was so stunned at hearing my mom talk that way that I didn’t move a muscle as my parents got into a doggie-style position. For the first time, I got to see my dad’s cock. It was huge compared to my young cock; which I continued to stroke. It couldn’t have been that big because it disappeared in my mom’s ass in one quick thrust.

“Hun, I want to cum now.” my dad yelled out to his wife as he was thrusting in and out.

“Do it, babe.” my mom answered back.

As I watched my dad’s cock disappear into my mom. my hand had picked up stroking to the speed of my dad’s thrusts. Just before my dad let out an orgasmic grunt, I filled my hand with the hot jism from my own cock.

“OOOhhhhhhhhhhh…” My dad grunted as my hot cum shot into his wife.

Although I couldn’t hear my mom since her face was buried in a pillow, I could see that she was cumming too. Sticky hand and cock, I found my way down the hall to the bathroom to clean up. I grabbed a towel and was cleaning my limp cock off not realizing that I didn’t close the door until I heard the gasp from my sister standing at the door. Hand on cock and jaw wide open, I was caught by my sister cleaning the cum from my cock.

We both stared for a few seconds before my sister finally spoke up, “Bro, what… what are you doing?”

My sister and I had a close relationship for siblings, but this was the first time that we have encountered some type of sexual exchange.

“Well.” I stuttered. “I, um…”

“What brother?” my sister knew what I did, but wanted to hear it from me.

“I jerked off watching dad ass fuck mom.” There, I said it.

“You watched mom and dad have sex???”

After a quick explanation of what happened and how I found myself watching my parents have sex, I begged my sister not to tell.

I didn’t expect the reaction out of my sister that I got. She was jumping up and down like a little girl at a parade. I noticed that she was in a baby-doll outfit and she was not wearing a bra. Her big perky tits were bouncing freely. For a young college girl, she did have that innocent, naïve personality about her.

“Do you think they are still going at it?” She asked as she shot down the hall towards her parent’s room.

I never got the chance to answer, as she was gone. I also realized that my hand had never left my cock and it was semi hard again. Did getting caught by my sister excite me? I packed my cock back into my briefs as I headed back to my room. I ran into my sister coming back from my parent’s room.

“They were fast asleep.” she said.

“Sorry, sis.”

She seemed to be in a daze and speaking to no one, “I would love to have seen that ass fucking.”

Not sure if she was speaking to me as I turned into my room, I asked my sister, “Did you want to see mom get her ass fucked?”

As she looked back at me, I saw a new lust-filled look on her innocent face. “I would pay anything to see someone getting fucked in the ass. It would be so intense to feel a cock enter your ass and thrust hot cum deep inside you…”

‘Did she want to see it or did she want to be fucked in the ass?’ I was now thinking from what my sister just told me. She wanted a cock in her ass. Did I have the guts to say it?

“Sis, do you want to have your ass fucked?”

Her hand was brushing her tits over her baby doll nightwear. Not acting so innocent now, she nodded slowly. She seemed to be looking past me as she was now visibly rubbing her breasts in front of him.

I looked in her eyes and they were not seeing me, but looking through me. “Do you want… do you want me to fuck your ass?”

Almost like a wake up call, She broke out of her stare and realize that she was rubbing her tits in front of her brother and he just asked her to fuck her ass. Being out in the hall seemed to hasten her as she grabbed my arm and lead me into her bedroom and closed the door.

As if she was telling me a secret, she leaded over and whispered to him, “Have you ever ass-fucked a girl before?” And before I could answer, she continued, “Better yet, have you ever fucked a girl?”

“Yes, I have fucked a girl. Remember Lisa?” I said, realizing that I just let out that I had fucked my sister’s friend. “And no, I have never ass fucked a girl before, but I want to.”

Seemingly thinking it over for a while. She finally turned and with those lust-filled eyes, told her brother; “Look, I want it bad. You have to promise that this will be our secret and you will never tell anyone. Promise?”

My cock hard as a rock, I nodded excitedly. “I promise!”

Going over to a draw in her nightstand, she came back with a little bottle of something. Grabbing my briefs and in one quick move, she had my underwear down at my ankles. Stunned, but obedient, I step out of them and I sat on her bed. She poured some liquid out of the little bottle onto her hand and she rubbed it in her hands for a few seconds. She then took a hold of my cock with both hands and was rubbing it up and down slightly. The gel was all over my cock and I was feeling the intense feeling of cumming. But just before the brink of exploding in my sister’s hands, she stopped.

“What is that?” I asked.

“It’s lube.” She answered. “If you are going to fuck my ass, you need to be well lubricated.”

I nodded in understanding as she stood up again and in a flash of arms, she stood naked in front of me. Her body was stunning to me.. I stared at her pussy lips and her nipples were sticking way out and were very pink, almost red. She had put one leg on the bed and was using her hands to lube up her ass. From the view, I could see she was sliding her fingers individually into her ass. my rock hard cock was now twitching with excitement as she got on the bed on all fours and called back to me. “Okay, I’m ready. Now take it easy since neither of us have done this before.”

Getting right behind her, I looked at my sister’s ass and pussy staring right back at him. Both had such an alluring sense about them and for a brief moment, I thought about fucking her pussy. But the will to take my sister’s virgin ass was too great. With my hand I guided my cock to the puckered opening. She reached behind her to help guide him into her ass. The head of my cock pressed against her hole and was met with a little resistance. Not knowing what to do I stopped. But it was a brief stop since she started pushing back to me. There was a little suction sound as the head broke through the opening of her ass. They both stopped. Placing both hands on her hips I then proceeded to push into her.

“Slowly…” She whispered.

Taking heed of her warning, I pressed into her carefully. I was about a third of the way in with my young cock when she let out a muffled cry. I stopped fearing that it was hurting her. A second or two went by and then she pushed back on my cock taking more in. With her pushing back, I pushed further until all of my cock was buried in her ass. my balls were slightly touching her pussy lips. I could feel the excitement and if I moved, I would shoot my load too soon.

About a minute later, she spoke. “Now fuck me slowly like you would to my pussy. And when I tell you, fuck me as hard as you can.”

With the skill of a novice, I started fucking her ass slowly. Going in and out slow enough that he would shoot my wad too fast. A few times he pulled out of her ass only to have her place him right back in. I was hearing her grunt faster and faster. So, I picked up the pace as she begged for it. I was picking up the pace just as I heard my sister scream into the pillow. She had hit her orgasm.

“Mmmmmmmmmm…ooooooooooooooowwwwwwwww…” muffled in the pillow, she let it out.

Hearing her orgasm, I fucked her with fury. A few quick hard thrusts and I was dumping my hot cum into my sister’s ass.

“Ooooohhhhhhhhhhhhhhhhhhhh…” I moaned as my jism was shooting in her ass.

Her orgasm never subsided as I shot hot cum in her ass. She just kept going and going and going. She could feel the intensity ten-fold. My final thrust pushed my cock into her ass all the way and it stayed. She slowly let her body down to the bed and her brother followed her never taking my wilting cock out of her until it fell out as they laid flat on the bed. Both of us were so exhausted that it was only natural that they fell asleep cuddled together from a virgin experience for both of them.

Source: reddit.com/r/eroticliterature/comments/ppojf9/sis_gets_a_surprise_in_the_middle_of_the_night