I'm a pervert. A dirty, dirty pervert... and so are you. But how?
Fetishes - obvious stuff. Leather, corsets, high heels (especially on leather boots). Suspender sets look unbelievable on some girls. I'm also pretty into BDSM (I'm a dom) - bondage, caning, spanking, that kind of stuff. My gf lets me hit her in the face during sex, she's awesome.
(She's into it too, in case you hadn't guessed, I didn't just kidnap her.) She also likes being choked and held down and what the lady likes, the lady gets, although I sometimes don't choke her as hard as she'd like. This is due to the worry I'll wind up explaining myself to a crew of paramedics.
Sexual quirks - neither of us really like kissing. I was so glad to find out she wouldn't want to sit on the sofa kissing for hours, that'd be like a nightmare. Boring, tedious and more effort than it's worth. We kiss for like fifteen seconds once a week or so at a guess.
Now tell me I'm not the sickest man (or woman) in the room by sharing your own fetishes and sexual quirks.