This is the 7th part in a series about Matthew and his sister Katie. See submission history for the first 6 parts
While I understood I was in for a good fuck leaving Rachel's when my sister texted me that her boyfriend wasn't in town I didn't understand the significance of the very next text she sent – “Text Alex, tell him you need him to come over tonight. That you got something of his. I'll explain later.” Alex? She must be referring to the only Alex we ever went to high school with and I think he was engaged now with a kid on the way. I've only hung out with him a couple of times back then but never since I got home from college. Alex was a partier. He started experimenting with multiple women well before I did in college but I heard now he'd settled down, was taking the marriage route and everything. Why would Katie decide to fuck him?
It was true that Alex was attractive, the amount of women that had flocked to him knew that. And he had the reputation for having the biggest dick on the football team back in the day. Maybe Katie just wanted the biggest dick she knew was around? But that didn't make sense. She had something of “his.” I couldn't think of what that possibly could be but I knew if Katie told me to do it then I should because something incredibly hot was going to come out of it. I texted Alex and he said it was late but I said it was the weekend and he'd really like to see what I had. He agreed and decided to come when his fiance went to bed.
When I opened the door to Katie's room I was blasted with a cloud of weed smoke. The next thing I noticed was Katie sitting on her bed with her pants off, pussy soaking, legs spread. But then I realized she wasn't alone, down between her legs was another female – not her friend Tara but from behind I couldn't tell who. Her ass was big and round and had long dark hair. The girl looked in a position to please Katie how she wanted. Katie smiled as she looked up at me entering the room without her partner knowing. As I walk up Katie motions me to come closer.
“Matthew,” Katie began, “This is our new fucktoy, Riley.” Katie motioned down to the young woman with big tits and dark hair who looked up. Her mouth was red around the lips and had clearly looked like she had been busy sucking Katie's pussy for a while. I could see her eyes were dilated and she looked dreamily in bliss and while Katie's pussy can have that effect I knew that she had taken some ecstasy. Then Katie unzipped my pants and started sucking my fully erect cock. The girl between Katie's legs stared in amazement for some time without saying a word as Katie carefully took in my length deeper and deeper.
“Now you see why you should tell me everything?” Katie asked in a directing tone to the girl between her legs. The girl just dreamily shook her head waiting to see my cocked get sucked more. The juices I could see running from her swollen cunt when I walked in through the door must be really flowing now. “Matthew do you remember Riley?” I strained my memory but it had been so many years. “Riley is Alex's little sister.” My mind got blown back since I hadn't seen her since she was in middle school. Now she was a wet mess between my sister's legs.
“Riley came and told me a little secret today. What was it Riley?” Katie asked.
Riley smiled uninhibited, “I want to fuck my brother.”
“Can you believe that Matthew?” Katie asked, “So I decided she needed some lessons on how to give head, but since you were gone I had to use my pussy instead. I just keep making her practice and practice only stopping to smoke or feed her some e. Can you believe she used to be nervous about this whole thing? Riley, when was the last time you ate a pussy?” Katie asked before licking my cock like a lollipop.
“Never,” Riley said with a smile of inward amusement on her face. Katie popped my cock back out of her mouth.
“She was reluctant to at first, you should have seen how nervous she was about letting it be known that she wanted her brothers cock. She would have done anything to keep the secret and so I made her. Now all she wants to do is eat my pussy, she can't stop telling me how great it tastes. But maybe she wants to taste your cock too…” Katie placed my cock back in her mouth and Riley looked longingly at it, almost getting lost in her own mind.
“Is this the present you promised me?” Riley asked kissing the inside of Katie's thighs. Katie pulled me out again.
“Michael's cock is a gift, but no this isn't your present. Go ahead, suck my brother's cock.” She passed over my cock like a spigot for her to drink form. Riley immediately started going down on me making me release a long slow moan. She was eager, her pussy untouched despite being so sexually aroused. The ecstasy and weed only made it better, she was so uninhibited, just needy to please.
As Riley and Katie passed my cock between each other my phone buzzed in my pocket so I pulled it out and looked. It was Alex. I told him to let himself in and come straight to the room at the end of the hallway, telling him he'd definitely like what I have for him. As Alex entered the room Riley and Katie were so involved in sucking cock that they didn't even notice. All Alex saw was the back of two eager heads and immediately he pulled his legendary cock out which was not hard yet, but fell out in front of him and was steadily growing. Just then Katie seemed to notice and pulled away letting Riley have my cock all to herself.
When Alex realized who she was he was about to say something but she put a finger over her mouth and walked toward him, still with a top on and without anything covering her pussy or ass. She knelt down in front of him and started to bring his cock to full erection with her warm wet lips. When she had done this, and enjoyed his cock a little longer for himself, she shot me a glance that I interpreted very clearly to hold Riley's head on my cock so she couldn't pull herself off. I understood her plan immediately and gently placed my hands on the back of her head.
“We have something for you,” Katie said to Alex. This is where Riley wanted to look, but I gripped her head tight to my center forcing her to stay on my cock. “We've been priming her all afternoon but we haven't touched her cunt, that's for you…” Katie continued. Alex looked interested at the head that was in my hands. “Riley, what do you want to do to Alex?” Katie asked giving me the look to let her go.
Riley gasped for air and a string of saliva still connected my cock to her as she turns around in her drug induced state and without the skip of the beat said, “I want you to fuck me Alex! I need it! Please!” Alex's huge cock twitched at the words and immediately he began walking to her. His cock glistening with Katie's saliva and my cock still fresh in her mouth. He picks her naked body up looking her deep in her eyes with no words, and then slid his length inside of her in one thrust. Riley's eyes rolled into the back of her head as she let out a guttural pleasure moan. As he held her he began to fuck her.
This was all so hot that I walked over to Katie, bent her over the bed and started fucking her. Alex's eyes met mine and we shared a sense of bonding knowing that we were willing to conquer anything, even our sisters, and we had no shame in doing it.
As the night progressed we changed positions including tossing Riley on top of Katie so their pussies faced outward on either end of the bed and each one of their faces were buried next to the others cunt. We took turns fucking each until finally we had to cum. I was fucking Riley at the time and Alex was fucking Katie.
“Cum in my sisters pussy and I'll cum in her mouth,” Alex offered. I didn't need another invitation as I pumped my load deep inside of her young needy pussy. Alex shot his load right into her mouth and I could see her savor the flavor for almost a minute before swallowing her brothers load, “Mmmm, I thought it would taste familiar,” was Riley's dreamily response once she swallowed, some of Alex's cum dripping from her chin onto Katie's pussy.
Just another wholesome night of family fun.
Source: reddit.com/r/sexystories/comments/37ykaw/riley_and_katie_inc_mmff_drugs