Friend 1: See you later man
Friend 2: Alright bro
Friend 3: Later guys
*smack
Friend 3: Man that tri-five was gnarly
Friend 2: Alright bro
Friend 3: Later guys
*smack
Friend 3: Man that tri-five was gnarly
by jstn April 2, 2008

Anal Sex, the origin was a Blizzard video game called Starcraft, where a transport ship would say what sounds like "in the butt five five five" hence tri-five for in the butt, aka anal sex.
by Brett Cox June 22, 2007
