Lizbeth: How could you be so stupid as to glue us together? [to Roz] I thought you said he was smart.
Niles: Don't panic. I seem to recall that-that superglue can be dissolved with acetone. You know, nail polish remover.
Daphne: He's the smart one. How did you know that?
Niles: I knew that from, uh... from school.
Frasier: School lunches. The Kriezel brothers used to glue a cafeteria tray to his tie.