Rap It Up

Summary

When a skilled rap group know as "CrewCrew" insult Pops and his poems, Mordecai and Rigby join with him when he challenges them to a rap battle.

Guest stars

• Tyler, The Creator as Blitz Comet / Big Trouble (voice)
• MC Lyte as Demel-Ishun (voice)
• Donald Glover as Alpha Dog (voice)