PaRappa the Rapper - Season 1 Episode 25 You're Saying You Can't Sleep?
Overview: After catching a cold from Gaster, PJ can't sleep, which has an adverse effect on him. What's worse, he starts to grow larger every time he eats. After being sucked into PJ's little world (via his nose), PaRappa and co. try to expunge the Gaster Virus and save their friend.