When you go into a bathroom at a resturant or any public place and you have to take a shit and you climb up on the top of the stall and go from up there and when it lands it resembles a bomb, hence the name.

A wrestling move in which one person lifts the other onto his shoulders, then slams him down on his back and neck.

While engaging in the standard pile-driver sex position, lift your partner, and powerbomb that ho' onto a table. If the table breaks, it is referred to as the markly powerbomb.