30 movies where they cut to someone telling the punchline to a joke without the set-up

1. Baby Mama
Doctor to everyone in Maternity Ward: "You think you're scared? I have to walk home alone!"

2. Sherlock Holmes
Sherlock to crowd: "And so the bartender says, 'How'd you like me to push in your stool?'

Both warranted ENORMOUS guffaws from me,and both times I was the only person in the theater laughing, wtf

3. Trading Places "...and she stepped on the ball"
It's a reference to a joke in *another* film called Auntie Mame which i've never heard of. Until very recently this line made no sense to me whatsoever. Makes only a little more sense now. That's classic John Landis right there.