So my wife and sister-in-law from time to time like to go out with the girls. I'm pretty much content to have a few drinks and play a couple video games at home while they and the girls go out and have their fun. Usually my sister-in-law will bring my niece by for me to watch. She's pretty happy to join in my video games and has gotten quite good!
We play together and talk about school and what-not. I suppose as she's gotten older I've started to notice from time to time. Her long blonde hair flowing over her shoulders. Her cute little bottom in her somewhat short-shorts. Her cute blossoming buds under a skin tight T. I try not to stare. We are playing video games. This is serious business! :-)
Tonight she decides we are gonna do a little team multi-player on a pretty popular fps. We are on fire! Just rolling people!! She keeps looking at me and throwing up a high-five...she's just giddy. As a sign of team spirit, she hops up and sits in my lap. No biggy...we are really in our groove here and racking up the kills. I momentarily take my attention away from the game to notice...she's kinda straddling me. She's more or less up on her knees, legs spread apart across my lap as I kinda look around her at the TV. She's notices my inconvenience and leans forward a bit. My attention wains again as I notice her cute little bottom now pointing towards me. Her tiny pj shorts are riding up and giving ample few of her sweet little cheeks. Well, no need to get all excited...focus on the game is where my head needs to be.
Just as I feel I've fully regained my gaming attention, she begins to rock...ever so slightly against my lap. I kinda watch as the muscles flex in her quads and cavs and her ass begins to slowly works it's way up my legs. Hey! Calm down big boy...it's a nervous twitch....she's just into the game. The major problem is that I'm no longer into the game...at all. I steadily begin to notice a growing issue between my own legs. Her rocking increases slightly as our game becomes more intense. She has nearly worked her tight little behind all the way up to my now throbbing cock. Her motion against my upper thighs is now driving me insane. I simply can't help but stare as her shorts ride further and further up the crack of her bottom. I'm pretty un-nerved at this point. I can't move her...I can't adjust for fear of disturbing her concentration...and I really, REALLY don't want her to stop!
She finally slides up just far enough to be rocking rhythmically over my erect cock. The game gets pretty close and her rocking pace increases even more. Suddenly, mid game, she freezes...the rocking stops, sits straight up, and she takes a short quick breath. I'm absolutely terrified! She peeks over her shoulder and our eyes lock. I can't even start to speak. I know she has felt the excitement brewing in my pj's and there's nothing I can do at this point. She smirks...the cutest little evil smirk I've ever seen and turns back to the screen. Not a single word! I'm safe, I have survived!! We play another 2 or 3 games and the rocking begins again...ever so slowly. It's the same as before...she's a ways down my legs as she begins to inch her way up. This time I do not take my attention away from the game in the slightest. I sure as hell wasn't going to stop her, but I wasn't sure I should encourage her. She makes her way all the way up to my cock and continues to rock...then, she surprises me a bit. She leans all the way forward and places her elbows on my knees giving me full view of her tiny tight ass rocking against my once again throbbing cock. Her hips begin to flex hard against my waist. I begin to roll my hips ever so gently, working my cock against her. I realize now that she has leaned far enough to have her pussy resting on my cock. I can feel the warmth coming off of her as she continues to rock her body against mine. I slide my cock a little faster against the warmth resting under her cotton shorts. I hear her breathing increase a little as her rhythm becomes faster.
In an instant we hear the garage door begin to open. My niece sits up slowly and in no hurry and quietly takes a sit beside me. Her mom and my wife step in full of laughter and many drinks and ask us about our evening. "Good, we kicked butt!" my niece exclaims. Her mom rolls her eyes and gathers her things to go.
Just as she heads out, my niece peeks back, "Let's play again soon, Uncle?"...and throws me that cute smirk once again. I smiled back and retort "Anytime sweety."
I confess...I love wanking to my little sister's big fat tits. Her fat chest has continued to grow as she packs on the pounds. I cum on her huge bras from time to time, and 'borrow' her panties...Am I wrong, what do you think of my little sister? Is she cum worthy? I'm sorry sis!