My wife and I make it a point to have dinner with her sister and her husband at least once a month at either their house or ours. My sister-in-law and her husband are kind of an unlikely couple she's really hot and kind of a bitch, I also know from knowing her for many years and being friends with many of her boyfriends that she's kind of frigid and only begrudgingly gives head. Her husband is like six foot four and is pretty good looking, he's also a really nice decent guy, very straight-laced goes to church every Sunday, coaches Little League, curses very rarely I don't have think I've ever heard him say the word fuck. Of course I have a lot of fun with this I say very crude for the shock value and also kind of bust his balls a little bit about not getting any pussy but he just shakes his head and smiles. About two months ago we were over their house for dinner, and he always takes me around the house to show me the progress he's making on his home improvements and such. So he asked me to come down the basement to show me something, we go into a store room and he pulls out this thing I have no idea where it was and use me every devilish look I said what is this thing he said it's a fleshlight I had no idea what that was so he explained to me that its a masturbation device that you pour Lube into and then you have sexual intercourse with it. I said man I'd like to try this thing, he of course looked at me like I was crazy then I said yeah we aught to fuct this thing together Poker Face. He said wouldn't that be gay? I said I don't know man do you like women, he said yeah of course I said so do I but I've messed around with guys a bit while I was growing up and it was pretty awesome, it's called bisexuality. He asked how did that happen? I told him that the whole time I was growing up one of my closest friends whenever he got the chance kept trying to get into my pants so one time I just gave in and let it happen and I got to say it was freaking awesome. We never got into any anal sex but we would suck each other stroke each other and grind Cocks which was my favorite. Anyway we went back upstairs and we had dinner and afterwards the girls wanted some ice cream, we had some at our house and I said I'll go get it he said I go with you. So we drove over to my house and as soon as we got in there he pulls the fleshlight out of his jacket and said I brought it if you want to try that. I was pretty stunned but intrigued so I said okay. There was nobody there but we went down to the basement anyway, I was rock hard by the time we got down there so I just undid my pants, I said do what you have to do with that thing, he pulled out a bottle of lube and squirted in there and kind of smushed it around inside of there to get it all coated and by then I had my pants down, hard on sticking straight up, he just kind of stared a little dumbfounded. I said well what are you waiting for pull your pants down, he flushed red and then started opening up his pants. Now it was my turn to stare dumbfounded because he had a pretty big cock on him and a beauty too probably a good eight and a half or 9 in and pretty fat and I thought I was pretty well with a 7.5 incher. I said I better stick it in that thing first because if you do I might not be able to get in. After a little bit of messing around we were both in there and I got to admit it felt pretty good with our shafts sliding up and down against each other I reached down and kind of rolled our nuts together with my hand, it was less than a minute before he went oh my God and I could feel him coming inside there the throbbing and the warmth of all that cum. It seems like he came for a minute straight and there was a lot of it and it started running out and over our nuts. I only lasted a few seconds longer and then had one of the most intense orgasms I've ever had, There was a huge mess on the floor. For me to clean up. on the way back to his house he had the usual guilt pangs. I said dude don't worry about it just look at it like it was masturbation with a twist it's not like we're going to elope or anything, just some fun between friends. A few weeks later we are back over at their place for dinner. After dinner the girls said they were going to the store to get some kind of dessert. As soon as they were out the door I said to come here I want to show you something up in the bedroom, he looked at me funny but then followed me upstairs. He turned the light on and I turned it back off again he gave me a puzzled look and then I just went over and started undoing his pants. he said what are you doing, I said I want to get a look at that beautiful cock of yours again I didn't really get to see it last time he said what if they come home I said we can see out the window if anyone approaches the house. By the time I got his pants down he was hard as a rock. I got on my knees in front of him and he said what are you doing. I said dude you deserve some good head and I'm going to give it to you and then wrapped my tonsils around that beautiful cock. About 30 seconds in I looked up at him said, well what do you think? He just kind of moaned and said oh my God. He didn't last much longer and soon said I'm about to come and started pulling away, I put my hands on his ass cheeks and pulled him in tight, he came very hard and I swallowed every last bit of it. about a week later he texted me around 10 at night and said that he had one too many drinks and could I give him a ride home from the bar it was only a ten-minute drive so I said sure. He got in the car and started thanking me up and down for picking him up. I said it's no big deal it only took a few minutes he said no but I want to repay you. I said don't worry you'll get your chance I'll need a lift or something and then you can return the favor. He said no I want to repay you right now, I want to do to you what you did to me last week after dinner. I said cool. He reached over and undid my pants and I was rock hard already. I pulled off on a dark side street and pulled over and then I said get your cock out I want to stroke it while you're doing this. I have to say for his first time he did a really good job, he really got to do it and when I came he swallowed it all and not a minute later he came from me stroking his cock. About a week later my sister-in-law was off on a business trip as she often is and my brother-in-law gave me a call and asked me if I wanted to come hang out as he often does when she's away. we sat on the couch and chatted over beers. he was sitting on the couch kind of reclined back with this legs out in front of him he had a pair of sweats on and at some point I looked over and realized he had a huge hard on straining against those sweats, which of course got me all hot bothered and I was soon fully erect. I got up and swung a Leg over and sat right down on it and started grinding my cock against his. I said do you want to try some cock Grinding? Let's go upstairs. We stripped off our pants and I laid on the bed and said you get on top of me, I want you to grind me with that awesome cock of yours, once again he only lasted about a minute and shot a huge amount of warm cum all over me, things got very slippery and then and not long after I was a goner. we did this and a bunch of other stuff and ended up cumming two more times that night. there's more to the story but if you want to hear it let me know and I'll post it in the comments I'm kind of getting tired of writing right now