You will Watch Regular Show Season 3 Episode 9 online for free episodes with HQ / high quality. Stream cartoons Regular Show Episode 49 Rap It Up. One day at the snack bar, CrewCrew and his crew (guest stars Childish Gambino; Tyler, The Creator; and MC Lyte) have been challenging people to rap battles, with all of them losing. Pops shows up and tries to beat them with poetry, but he gets humiliated. Angered, Pops challenges them to a rap duel. He recruits Mordecai and Rigby to help them with the rapping because Pops cannot rap, he can only recite poetry. However, Pops refuses to rap negativity against the CrewCrew, so he decides to stick with poetry. Soon, Mordecai and Rigby realize the beauty of poetry, but they decide not to go after poetry and call Pops a loser. Skips tells Mordecai to help Pops, and they go there to try and settle the score.