Continuity mistake: Bernard's accordion in certain shots is already damaged from when he kicked it in earlier takes, and other times undamaged until he kicks it.
Black Books (2000)
1 mistake in Fever
Starring: Dylan Moran, Bill Bailey, Tamsin Greig
Genres: Comedy
Chalkboard: Don't.
Trivia: Fran's last name is Katzenjammer, which is German for "A momentarily severe hangover". It translates literally as "cat misery".
Question: Is there an episode where Bernard can't think of the word for a scanner or card reader or something and refers to it as a "beepitibeep"? Might have the wrong show entirely.
Chosen answer: You may be thinking of S3E1, "Manny Come Home", when Manny quits and gets a job at Goliath Books next door. The device they use to scan books, look up items, or even order muffins is referred to as the "Doo-Deedee-Doo," after the sound it makes when employees scan their cards in it.