Caveman Regular Show : Season 4 Episode 20
TV-PG Cartoon Network 23m
Aired: February 25th, 2013 @ 7:30 PM EST on Cartoon Network
When Mordecai and Rigby meet a caveman, they decide to put his unique prehistoric physique to good use: chugging cheese! But could this caveman actually turn out to be a Neanderthal nuisance?
