>>214807788 (OP)
Question from an autist: When girls grind on you like this at parties or concerts or whatever, are they expecting you to get hard?
This webm is a bit of an extreme example and I've never experienced anything like this, but when I was in college getting dragged along to house parties by my friends I'd sometimes have girls dance up close to me and then rub their asses against my waist. Usually they'd start off lightly as if to test if I was into it, and then if I didn't pull away they'd gradually start rubbing more and more aggressively against my crotch with their ass. I'd always try super hard to not get an erection, sometimes I'd literally just walk away if I could tell it was going to be impossible. I always felt if the girl could suddenly feel my hard dick through my pants she'd be grossed out or feel like I was assaulting her or something.