Revealing mistake: Laying in bed asleep, Lulu has a sucker swinging on a string to and from her mouth as she snores. When we first see her, after the sucker leaves her mouth the first time, her hair has a glitch. For a few frames, one loop of her hair vanishes, and then comes back. This repeats each time the sucker moves away from her. (00:00:45)
Revealing mistake: When Jerry walks towards the crab with the soda bottle cap stuck on his head, one of the crab's legs disappears for a frame or two.
Revealing mistake: When the businessman rushes back into his bed after closing the window that Daffy opened, he is wearing his normal trousers.