J.D.: Why are we watching a movie again?
Turk: It's called immersion therapy. What we're about to watch is going to make her say "that's so funny" so many times that eventually it's not gonna bother you any more.
J.D.: But how can you guarantee she's gonna laugh at this movie?
Turk: I can't. But Uncle Buck can.
[later:]
Julie: That's so funny. That's so funny. Look how big that pancake is! That's so funny.
J.D.: [whispering] Make her stop!
Julie: That's so funny!