Continuity mistake: When Mel Gibson approaches Dot at the receptionist's desk, the number of transfer keys and blinking lights on the telephone changes.
Continuity mistake: In the scene where Wakko constructs a barricade of doors in the secretary's office just to keep Yakko and Dot from busting in to answer the phone, Yakko decides to paint a door of his own, on the adjacent wall. But the couch and mirror, which were there only a few shots ago before he started painting, have disappeared.
Continuity mistake: As Mr. Plotz tells the Warners to get out of his life, Yakko's left hand keeps changing its position on Wakko's shoulder with each shot, right before the office phone rings.
Continuity mistake: When Mr. Plotz's secretary sneezes and sends her desk flying across the office floor, the telephone on top gets knocked from its hook and dangles over the edge. After she uses the intercom to call in sick we can see the phone hung up just like before, but her hands never touched it at any point.
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