Continuity mistake: In this episode, Al has taken on the persona of Axel Bundy, a rock star, so he can fly first class with older rock stars. But before they start a jam in the first class lounge pre-flight, one of them calls him AL when he's prodding Al to join the group when all they knew him by was the name Axel.
Factual error: Bud goes to Marcy's bank to cash his college grant check for $25,000. She gets side tracked by Jefferson, takes the check, then gives Bud his own checkbook. Bud leaves the bank and Al and Peg come in and make a deposit on his college fund. The teller gives them a receipt showing there's $25,000 in the account. Not possible considering Marcy has the check and with a check that big, there's a wait period.