This is the problem with society - some label this as perversion, I just see people with bodies of all types having a fucking good time. If you like a cock in your ass or putting your cock in an ass then who am I to judge? I the arc of history I'm sure many have fucked a woman's asshole because they hadn't been told it was bad or didn't know who babies were made. And until religion came along I'm sure many a man got fucked by another or was seduced by an attractive sissy and decided to just go with it. It's all good man!
Shame on you