A man was walking in the city, when he was accosted by a particularly dirty and shabby-looking bum who asked him for a couple of dollars for dinner. 

The man took out his wallet, extracted two dollars and asked, "If I gave you this money, will you take it and buy whiskey?" 

"No, I stopped drinking years ago," the bum said. 

"Will you use it to gamble?" 

"I don't gamble. I need everything I can get just to stay alive." 

"Will you spend the money on greens fees at a golf course?" 

"Are you MAD? I haven't played golf in 20 years!" 

The man said, "Well, I'm not going to give you two dollars. Instead, I'm going to take you to my home for a terrific dinner cooked by my wife." The bum was astounded. 

"Won't your wife be furious with you for doing that? I know I'm dirty, and I probably smell pretty bad." 

The man replied, "Hey, man, that's OK! I just want her to see what a man looks like who's given up drinking, gambling, and golf!"