Holidays of Future Passed - S23-E9
Corrected entry: When Carl and Lenny are talking about the brain switching ceremony in Moe's Bar they speak with each others voices. For this to happen they would have to have switched vocal chords too.
Holidays of Future Passed - S23-E9
Corrected entry: When Carl and Lenny are talking about the brain switching ceremony in Moe's Bar they speak with each others voices. For this to happen they would have to have switched vocal chords too.

Continuity mistake: This is a mistake for the introduction from seasons 2-20 (1991-2009). When Homer screams, he turns round. You see this in a wide shot. There are no boxes to the right of the door in the garage. However, two just appear out of thin air when he runs through the garage. (00:01:50)
Skinner's Sense of Snow - S12-E8
Nelson: Hey, look how much Skinner makes: $25,000 a year.
Bart: Let's see, he's 40 years old times 25 grand. Whoa, he's a millionaire.
Skinner: I wasn't a principal when I was one.
Nelson: Plus, in the summer, he paints houses.
Milhouse: He's a billionaire.
Skinner: If I were a billionaire, why would I be living with my mother? [All the kids laugh at him.] They're just not responding to logic anymore.

Trivia: Maggie scans as $847.63 in the supermarket at the beginning (not NRA4EVER, as Troy Maclure asserts in 3F31 "The Simpsons 138th Episode Spectacular), the price it costs to feed and care for the average American baby every month.
Question: Which episodes feature the "Howling Dog" (usually used on outside shots of buildings)?
Correction: This is speculation at best, not a mistake, since there's never been a brain switch to prove this. Plus, the vocal chord is controlled by muscles to change speech, and the muscles are controlled by the brain. This is why people can impersonate other people's voice (or at least change their own voice).
Bishop73