The much more sophisticated version of "w00t". Often used in variation with othe similar words. b00tz0rz can be a standalone exclamation, or it can be a concrete idea, ie. to w00tz0r one's b00tz0rz is to woot one's boots. This is closely related to rocking one's boxers, or r0x0r j00r b0x0rz.
The term was coined by the infamous KryptoniumFetus.