Zoophilia. I hate that I like it

Actually, my guiltiest pleasure fap(s) was to my mom. I mostly grew out of it, though. *shrug*

As long as it doesn't have to do with scat, blood, urination, or death, I could probably fap to it.

So as far as guilty pleasure goes... rape. It's a horrid, violent crime that can, if brutal enough, leave the victim in a situation worse than death. Mind you, I can't really fap to brutal rape, but stuff that could be potentially just seen as really rough sex is a turn on.

The schlick I've probably regretted the most was when I saw my little nephew in the shower. I still get a little wet when I think of it...

Probably my mom

Monstergirls. The best femdom hentai stuff seems to revolve around them.

Astolfo.