"Genie and Mother-in-law" joke

A man finds a lamp and decides to rub the dust off. Then, you guessed it, a Genie appears. The Genie tells the man he will grant him three wishes, but everything the man gets, his mother-in-law gets twice.

The man's first wish is for 10 million dollars. The Genie reminds the man that his mother-in-law will get 20 million dollars.

The man says, "that's ok."

The man's next wish is for a house by the sea.

Once again, the Genie reminds the man that his mother-in-law will get two houses by the sea; once again, the man says, "that's okay."

The man's last wish is to be beaten half to death!