More than one mother-in-law.
Two mothers-in-law.
Two wives.
Tequila
Put both of them in the trunk of your car...drive around...open the trunk and see who is happy to see you.
The joke is its own pun-ishment.
One's against the law, and the other's a sick bird.
It broke the law of gravity!
Punishment.
Dad: GO ASK YOUR MOTHER!
Monster: I did once but my mother made me give it back.
