A man walks out of a bar and sees a bum panhandling
on the corner. And the bum says, "Mister, can you
spare a dollar?"

The man thinks about the question for a bit and
asks the bum, "If I give you a dollar, are you
going to use it to buy liquor?"

"No, says the bum."

The man then asks the bum, "If I give you a
dollar are you going to use it to gamble?"

"No, says the bum."

So the man says to the bum, "Do you mind coming
home with me so I can show my wife what happens
to someone who doesn't drink or gamble?"