Audio problem: While Lynda is filing her nails just as Michael enters the scene wearing a sheet and glasses, the sound of her filing continues despite her pausing.
Audio problem: When Laurie's crying near the end her mouth isn't moving in sync with the audio.
Chosen answer: Because it was too graphic and elaborate for her to think it might be a prank. Not to mention that there was probably a very distinctive smell to the room.
JC Fernandez