Definitions by Schwiga

iTz 

Initials standing for "in the zone", which was a popular Halo 2 clan.

Often mispercieved as meaning "it's" by the people that use it in Halo 3 and elsewhere today.

Someone unaware of the meaning of it might have the gamertag OMG iTz... or WTF iTz...

iTz by Schwiga January 7, 2009