A
prisoner in jail receives a letter from his wife: "Dear
Husband, I have decided to plant some lettuce in the
back garden. When is the best time to plant them?"
The prisoner, knowing that the prison guards read
all mail, replied in a letter: "Dear Wife, whatever
you do, do not touch the back garden. That is where
I hid all the money."
A week or so later, he received another letter from
his wife: "Dear Husband, You wouldnt believe
what happened, some men came with shovels to the house,
and dug up the entire back garden."
The prisoner wrote another letter back: "Dear
wife, now is the best time to plant the lettuce."