I know it's sick, I don't like it-- but it's a huge turn on.
I'm thirty one, and I fantasize about this fourteen year old girl I used to see around church and related functions. Not "normal" fantasies, you'd expect I'd think about overtly sexual stuff, but I don't. In my most common fantasy she's wearing a certain pair of jeans I've seen her wear. We're standing near each other in the church when she suddenly punches me hard in the stomach. When I sink to the floor, she moves to stand over me, and stares coldly down with a puckered, disgusted smirk. My groans prompt her to snicker under her breath and say something cruel, maybe "Shut up, r*****!" And I get a great look at how her jeans fit under her tee shirt.