tri-five 

A super high five between three people. Usually friends.

Friend 1: See you later man
Friend 2: Alright bro
Friend 3: Later guys

*smack

Friend 3: Man that tri-five was gnarly

tri-five by jstn April 2, 2008

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

Trifive 

to simultaneously high five two people at once, creating a circle of high fives.

When the basketball team scored, we celebratated with a trifive!

Trifive by LaurenNicolee January 10, 2009