A prisoner who's great at gardening receives a letter from his wife...

A prisoner who's great at gardening receives a letter from his wife...

"Dear Husband,
I want to plant lettuce in our backyard
garden. What is the best time of year to plant it?"

Knowing the prison guards monitor all mail, he writes back...

"Do not touch the garden. That is where I buried our life savings. See you next visit."

The wife writes back...

"Yesterday I got back from the store and the garden had been dug up! How much money was there?"

The husband writes back one last time...

"None. *Now* is the best time to plant lettuce."