The way that both sexes can move their hips forward and back rapidly in order to make the other person ejaculate. Can be used during sex in order that the male can get his penis inside a woman further, often so he can hit her g-spot. Males can also start masturbaiting when woman pelvic thrust at them. Also is a dance move in 'The Time Warp'.
"Oh baby, please pelvic thrust and hit my g-spot!"