Other mistake: Lucy's drivers license says her birthday is in January but she was conceived on Valentine's Day.
7th Heaven (1996)
1 mistake in Just You Wait and See - chronological order
Starring: Jessica Biel, Catherine Hicks, Stephen Collins, Beverley Mitchell, Happy
Ruthie: Bad words make me sound bad.
Simon: No, bad words make you sound stupid.
Trivia: This episode has the infamous scenes in which Mary wants Matt's help with kissing. Supposedly, the original script involved the siblings actually kissing for practice, but Jessica Biel (playing Mary) and Barry Watson (Matt) refused to do it.