Definitions by GARY FATTY

Poop on a gamertag

The act of actually taking a shit on your own Xbox console that is connected to Xbox Live.

More commonly, it is the act of making fun of a gamertag online.

HOLY SHIT THAT FUCKER JUST TOOK A POOP ON A GAMERTAG

Poop on a gamertag by GARY FATTY October 30, 2010