1. Youtube phenomenon which is believed to originate from Thunder Toro. Grizz being a famous montage-maker, everybody started saying You ain't Grizz, baby! to retards doing 360s and jumping off of shit in Call of Duty.
2. Popular podcast hosted by Essindees, GoldGlove, B3ndro and Hutch.
Sit down Randy, You ain't Grizz, baby!