Two mothers-in-law.
Because his mother was in a jam.
It's mother was in the pen and it didn't know how long the sentence was.
They're both there to be violated. (The sad part is that a Portuguese Taxi Driver actually said that seriously in a protest against Uber)
One's against the law, and the other's a sick bird.
Two wives.
For fowl play.
The joke is it's own pun-ishment.
