The act of being a yahoo. Often personified accurately by Truman and his annoying camping tendencies--also could be a Jason camper--as well as his ridiculous classes.
Wow, that guy is yahooistic, yeah i know... Wait, Truman just joined our game on the other team.
Look at that bitch! He's being extremely yahooistic
Look at that bitch! He's being extremely yahooistic
by StShabock July 7, 2010
Get the Yahooisticmug.