I'd have to say it's the actual porn that opens men's minds into having more diverse desires and fantasies. Before I saw a porno, I was happy just to get my dick in a pussy, and my only fantasy was 2 chicks at once. Now I have all kinds of weird fetishes thanks to all the perverted smut I've watched.

I've never fantasized about another man, yet, I've got off to scenes where a chick is scarfing 3 cocks, so I really don't know what the classification could be.