Regular Show: Season 4, Episode 19
4 - 19: A Bunch of Full Grown Geese
The duo try to civilize a caveman so he can stay at the park; Muscle Man wants to spread his dad's ashes at the Big Rig Museum and needs Mordecai and Rigby's help getting there.
The duo try to civilize a caveman so he can stay at the park; Muscle Man wants to spread his dad's ashes at the Big Rig Museum and needs Mordecai and Rigby's help getting there.