Regular Show: Season 1, Episode 4

1 - 4: Death Punchies

Rigby and Mordecai are up to their normal shenanigans when they are asked to tend to the garden. They are handed shovels and they pretend sword fight and Mordecai hits Rigby in the head and he thinks he killed Rigby. He needs to now find a very hidden place to hide Rigby's body before anyone else finds out.