When I was a Senior in HS (18) I had an old FWB (we'll call her Amy) who went to a college semi-nearby. I used to go see her every so often throughout the year. At first she would make sure her roommates were gone when I'd come over but as there were four of them in a suite that was possible plus they got comfortable so I started to come up when they were around. Eventually it got to the point that after fucking we would wind up hanging out and they'd be around so I got to know them a little bit. We'd usually fuck when I got there and then at least once more before I left so they loved teasing her when we went to her room before I left. One time we were hanging out and they made a comment as we went to her room so I smacked Amy on the ass and they all hooted and hollered. As we got going they stood outside the door and cheered, encouraging me to fuck her harder and smack her ass (they'd been pregaming) so we put on a show for them.
The next time I was up there I did basically the same thing when I arrived and we went to her room and fucked and they again stood outside and "cheered" and made comments. It was a good time, afterwards we were all hanging out drinking and playing games and I was planning on going out to some parties with them. Before we left for the party I wanted to fuck again so I tried to get her to go to her room before we left. Her roommates started saying they wanted to keep playing games and teasing me about not really needing to get laid and we could just fuck all night and things like that. Finally one of her roommates said, "c'mon he drove all the way here, he deserves it." When of her friends burst out "Amy just blow him here so we can keep playing!" while giggling.
"She wouldn't." I said chuckling. "Oh yeah?" and the next thing I knew Amy was on her knees pulling my cock out of my jeans. Her friends cheered and giggled as she started sucking my cock which was definitely rock hard at this point. I know this is an erotic sub and you probably are all hoping for this to turn into a wild orgy but the fact is the wildest thing that happened from there was I pulled up her shirt and bra to get a good look at her tits and we honestly kept on playing our drinking game as she sucked my cock.
She wasn't really big on swallowing but when I told her I was getting ready to cum I offered to pull out and come on her tits which was what I usually did, with her mouth full she shook her head and said no and I came in her mouth and she swallowed. So I guess that was one perk. Again I'd love to tell you that this turned into some wild fuck fest where I was banging all her roommates free use but it's still a pretty good memory.