ridiculous, or a situation of any kind that would occur in Yabosecity. Often related to an event that somebody Yea-Boied something or someone.
Wow, that shit was Yabose as hell...I ain't gonna say nothing but Robert's yabosticity is off the hook.
by Max Thayer April 30, 2007
describing pretty much the most ridiculous situation ever, so ridiculous you're pretty sure it's made up.
Bro, did you know that Lenox Memorial High School's mascot is the Monopoly Millionaire? I mean, that shits pretty yabose dude.
by Guaty J August 4, 2007