In a First Person Shooter (FPS), it's the legendary act of scoring a 7 kill multi-kill.

If one is to ever achieve this rare event they must yell out " T-T-T-Tri QUAD. "

TriQuad is often mistaken with Tri-QUAD which is when someone mistakenly thinks they got a Triple kill but while in the middle of yelling triple they notice the call sign showing "multikill" and scream QUAD resulting in "Tri-QUAD"

When you eat dirt for the first time and leave your family to build a shack in the woods