Through the pants (or TTP), was a phrase coined during the initial rise of Halo 2 multiplayer. “Through the pants” implies that your opponent just got raped to such a severe and embarrassing extend that the removal of pants was not required, for either party present during the commission of said rapeage.
“Curtis, can you see me teabagging your corpse? I know you like it, all rough like this. Through the pants!”
“TTP, you suck!”
The absolute guarantee that you're going to get laid.
Jerome got that sewed up with janice tonight.