Teabag

(verb) To show superiority over another after a kill in a video game, by repeatedly shoving one's ass into the dead player's corpse. A wildly known method of taunting in FPS games such as Halo, Destiny, Call of Duty, among others.

Bro, what the fuck, I keep getting annihilated by this teabagging asshole.

Get fucked son! Gonna teabag you so hard...

This shit's using cheap weapons, we gotta teabag his ass with every kill.