Regular Show
Rigby's Body / Mordecai and the Rigbys
S1 E106:
"Rigby's Body" - Mordecai and Rigby argue over the benefits of a healthy diet after Rigby eats way too much junk food. "Mordecai and the Rigbys" - Mordecai and Rigby accidentally enter into an open mic and have to learn how to play one song to avoid embarrassment.