Grounded for Life (2001)

Oops!...I Did It Again - S2-E22

Continuity mistake: This episode establishes that Lily was born at the Live Aid event, which took place in July 1985. In the show's final episode, "Hello, Goodbye", Brad and Lily are graduating in 2005 (see the "congratulations" banner in a hallway at their school). Being born in 1985 would mean that she is graduating at age 20. It is highly unlikely that she failed and repeated two of her school years. Brad, who is the same age, is graduating with her, and he is a dedicated student.

Henry Finnerty: Wow, that ride must be really scary. Those two guys are holding hands.
James "Jimmy" Finnerty: That's the line for cotton candy.

Trivia: In several episodes, when people are in the kitchen, you can see that the microwave always has 34 seconds of time left on the display.

Jimmy Was Kung-Fu Fighting - S1-E12

Question: How can Sister Helen give Lily detention when she sees Lily's tongue ring? She is at the Finnerty's house. Piercings are often a violation of school dress codes, but Sister Helen has not seen the piercing while at school.