jackwave
Sticking two fingers up a woman's crotch like a drunk man trying to find a missing sock. If she laughs or hits you, you know she's a real piece of work.
He did the jackwave at the bar and got slapped. Classic.
She did the jackwave during the dance and didn't even flinch. Total legend.
He did the jackwave at the party and got a free drink. That's how you know it worked.