In an online FPS game, to stand over the warm corpse of your opponent and repeately squat up and down in a display of dominance. This activity is usually accompanied by screaming something such as "You are owned
! How do you like that shit, fucker! Huh! Huh!" Ideally, this childish display of bravado ends abruptly with a sniper shot to the humpers head.
"Mom, you're messin' me up! Now CaptainUnderpants is corpse humping me! Get me some fuckin' chocolate milk!"