Continuity mistake: When Hiskill and Eggbert greet Skippy at the theater entrance and expect to be granted access without tickets, the pair of red doors in the background change their designs in the shot where Slappy says, "Persistent little buggers, ain't they?"
Continuity mistake: When Slappy greets Hiskill and Eggbert at the theater ticket window, the ledger she's holding jumps from her back to front in a changing shot.
Answer: According to the Animaniacs Wikia: "Baloney is one of the few people capable of truly terrifying Yakko, Wakko and Dot, largely due to being impervious to their violently physical brand of humour and his inability to understand how much they despise him."
lionhead