Chairman of the Bored - S1-E139
Continuity mistake: After Wakko's vacuum cleaner sucks up Sigourney Weaver's wig, its handle alternately rests on his left and right shoulders from one shot to the next.
Continuity mistake: As Captain Ahab swears vengeance on Moby Dick, two of the dinghy's oars vanish between shots.
Continuity mistake: When Pinky and the Brain appear from beneath the busted mechanical dragon's access panel, Pinky gets hit in the face with a gear. But in the next shot he's suddenly much farther away from the panel.
De-Zanitized - S1-E3
Continuity mistake: In the scene where Wakko gets evaluated by Dr. Scratchansniff, a portrait on the wall behind Wakko relocates to the adjacent wall.
Continuity mistake: After getting burned by the volcano's lava, Buttons rides past a caveman with two sticks. When the shot changes, one of his sticks goes missing.
Continuity mistake: When the Warners meet Queequeg, he's seen holding a harpoon with both hands, then only one, as soon as the shot changes.
Continuity mistake: When Candie Chipmunk agrees to take one box of Skippy's Girl Scout cookies, her front door switches to the opposite side of the frame between shots.
Continuity mistake: When the Bride of Frankenstein dances between the pair of slabs in her laboratory, some of the operating tools on her trolley vanish and reappear as the shots alternate.
Continuity mistake: Before Mindy's parents leave her to go out hunting, Buttons stretches out in his stone doghouse and crosses his arms one way. But once the shot changes his arms are crossed differently.
Continuity mistake: When Captain Ahab broods to his crewmate over the elusive Moby Dick, the quarter door closes between frames, just as the Warners appear to antagonize him.
Continuity mistake: At the beginning where Dr. Scratchansniff welcomes Yakko to the pulpit, Dr. Scratchansniff changes his position between shots - turning to face the audience.
Of Course You Know, This Means Warners - S1-E269
Continuity mistake: When J. Edgar Hoover pulls up to collect the drum of scrap nylon, Yakko and Dot swap places between shots.
Continuity mistake: When Marita approaches the ark with Flavio, an exotic pink bird rests on her right shoulder. Once the angle changes, the bird switches shoulders.
Continuity mistake: As Wakko sits in the theater drinking from an Abyss Boy, his right foot quickly pulls itself onto the armchair between cuts.
Continuity mistake: After Slappy pulls the walnut soda can from Candie Chipmunk's trash receptacle, a lid appears on the receptacle between frames.
Continuity mistake: In the scene where Hercule Yakko pays Minerva Mink a visit, her left hand switches places with each changing shot. Either it's leaning on the cabin door or resting on her thigh, depending on the angle.
Plane Pals - S1-E91
Continuity mistake: When Yakko is disguised as a hillbilly in first class, he makes small talk with Mr. Bloski and smacks him on the back in a friendly manner (nearly out of his seat). Between shots, Mr. Bloski regains his composure and grabs onto the seat's armrest.
Continuity mistake: When the Warners have Mr. Director pinned against a wall wielding their weapons of choice, Yakko's paddleballs disappear between shots.
Continuity mistake: When the Warners hide behind some wooden crates in Mr. Director's studio, the largest crate changes style between shots (note the new diagonal planks attached on both sides).
Meatballs or Consequences - S1-E79
Continuity mistake: When Death rescinds his proclamation to the Warners, Wakko's "kaput" sticker moves itself from the red hat to his forehead just before it gets peeled off.
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