College Game Of Unnatural Sex

A decade ago in college, I had a close group of friends who grew to talk very openly about sex, though a few of us had come from repressive households and grew up being taught that "natural" and "normal" sex was between men and women, and about putting penises in vaginas. We were all mostly heterosexual, but loved talking about how different kinds of sex were equally acceptable. One night we were brainstorming about unnatural sex could be, but we excluded toys and fetishes, which we know could get really crazy, and also wanted to limit it to sex that could lead to orgasms. We came up with: two heterosexuals of the same sex doing a 69, with two people of another sex touching or licking their assholes. Our idea was that this was something heterosexuals could do, and could lead to orgasm, but in the most unnatural and non-procreative way.

So then we dared each other to actually try it, and just for the novelty of it we did. None of us had sex with each other before, but it felt like a major accomplishment, like we could handle anything after this. So we began with me and another guy sucking each other while the two girls watched for a while, lightly fondling us, but before long they bent down to poke and lick our assholes. This was really exciting, and while I wasn't attracted to guys, it was fun having John's cock in my mouth while watching Joan lick his asshole right next to my face, watching me and grinning as I bobbed my head back and forth on his shaft. And I could feel Jane (all names are fake of course) licking my butt as John sucked on me, which was amazing. John came first, filling my mouth with semen, but while I was managing that I totally lost control and squeezed out my load between his lips as Jane kept wiggling her tongue across my anus. The girls licked our faces to help clean up, and we talked about how surprisingly fun that was.

A few nights later we did the reverse: Joan and Jane lay down to eat each other's pussies, while John and I licked their assholes, fondling them all over as we did so. We hadn't talked about going further, but I told Jane her butthole looked so cute I wished I could fuck it, and she said "please do." So a minute later I found myself for the first time entering a girl's asshole, and John went inside Joan the same way, not to be left out. So this time all four of us came, in some order I can't clearly remember, but again there was sharing of cum and we fell into a post-orgasmic heap, priding each other in how we resisting the supposed biological imperative of "natural" sex and redirected our energies to cuming for the sake of cuming.