Definitions by Brett Cox

tri-five 

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.

So I did the Tri-five last night for the first time. She actually likes to tri-five.

tri-five by Brett Cox June 22, 2007