"What's the matter, eh? Are ya-are ya-scared like some tasty flightless bird?"
Bully Boogie is hysterical because of, not the very beginning, but the last half of the episode. From the scene with the rubber duck to the very last scene with Billy riding a monster yelling "haha you got a boogie in your nose!" it's probably my favorite.
Here Thar Be Dwarves is another hysterical episode and perfect for the second episode in 30minutes after Bully Boogie. From the very beginning until the very end, this is hysterical. And it doesn't taste like my cat, either!
This IS exactly why I watch Billy and Mandy.