Dirty Dancing. When a girl moves her ass on a guys dick to turn him on. Or when the girl and guy face eachother and the girl rubs her pussy with the guys dick or humps his leg. It's any sexy or suggestive dancing.
I grinded with my boyfriend at prom untill he got hard as a rock.
The act of dancing where you rub your penis on a girl's ass in a dancing fashion It feels really good and it never seems to last long enough. Sometimes it can get really graphic and god does it feel good.
Dude, I loved grinding that blond babe with the huge ass!