Mid night fisting. SeXStoRY

My story happened a couple of weeks back. My s****r in law stayed the night at our house because she was getting her apartment fumigated. I being the nice guy told her to sl**p in the master bedroom with my wife because the couch can be uncomfortable. I stayed up till around 1am fooling around on xhamster....hehehe. I fell asl**p on the lazy boy because its way more comfortable than the stupid couch. I was having an erotic dream and my shit was rock hard, next thing I know I feel hands on my thighs and rubbing my cock over my shorts. All I'm thinking about is my wife wants some cock. I'm up by now but lay there like I'm still asl**p, I feel my shorts being pulled down and my cock swings out. I hold my breath because I know what's going to happen next. My tip is already wet and slick due to my precum. I feel hands start to work my head and shaft in a slow and steady rhythmically motion. I let out a soft moan and this triggers her into moving faster. I'm all worked up now at this point and I hear her spit on my cock and I can hear it and feel those slippery hands working wonders on my shaft. By this time she's all worked up and all I feel is a hot and wet mouth engulf my cock, I'm shocked at the intensity and ravenous attitude she's taken with my member. I hear movement and now I feel a hand clutch mine and put it on her snatch. I tease the outside of the lips at first and I hear her moan, meanwhile I'm steadily getting devoured. I work one finger into this hot, ridiculously, wet cunt and my finger immediately slips in without any friction all the way up to the knuckle. I hear a sharp gasp and I squeeze out a bit of per cum out of sheer excitement. I immediately put two more fingers in and I'm steadily working them in a slow and steady motion. She's aching for more by now so I f***e what's left my pinky and thumb inside her lovely meat cave and I feel her clench up and let out a high pitch moan. She slows down on my cock as I f***e my large hand ever so deeper inside of her, I reach the point of no return the knuckles.......WHAM !!!!! I f***e them through with a violent push and she let's out a loud gasp, she grips my shaft like there's no tomorrow and I let out another glob of precum. I'm working my fist in and out now at a wet and sloppy pace . She resumes her oral rage and I feel it at the base of my balls. I can feel her clench up now and her breathing has become labored. I feel that tingling sensation at the base of my shaft and I hold it, she's clenching on my fist for dear life at this point and I can't hold it any longer .......UUUGGGGHHH!!!!!! I let it rip and I feel that hot cum rush through my shaft and into her mouth. My fist balls up and unexpectedly I feel her pussy clench around it ...HARD! She lets out a loud moan MMMMMMMM !!!! I feel a hot rush of warm fluid squirt from her wet pussy onto my wrist and down my forearm, I finish sending my last bits of cum with and extreme f***e. She swallows every drop and we stay motionless for about a min reevaluating what just occurred. I slowly pull my hand out and cannot believe how wet it is, she stands up and I feel a peck on the lips. I stand and pull my shorts up and she scurries back upstairs. My elbow is wet from her cum so I go wash up, I immediately fall back asl**p. I'm woken up in the morning abruptly by my wife and she tells me to help her s****r with her stuff, I'm still halfway asl**p and I take her stuff out to her car. As I close the trunk she comes up to me and tells me "thank you for having me" I reply "anytime" she then leans over and gives me a peck on the lips and I immediately realized what had happened the night before. My jaw hits the floor, she smiles and gets in her car and drives off while i stand there speechless.