Butt-Bounce
A popular move in video games, also called the ground pound
Mario took out bowser with a stunning Butt-Bounce
butt bouncing
Sitting on a guy and bouncing that ass.
She was butt bouncing for me last night.
Butt bouncing
The act of sitting on the floor and bouncing up and down on one’s butt while throwing a tantrum of frustration and/or embarrassment.
Barry was butt bouncing for an hour after the break-up with Carli.