Sam and Abe, each in his eighties, had been friends since grade school. Now all they do is play cards, tell jokes and make bets. One day, Sam said to Abe, "I'll bet you that mine is longer soft than yours is hard. How about a thousand dollars?"
Abe replied, "How can that be? If you know anything about biology, you know...."
Sam interrupted. "Look, it's a bet, not a lecture. Yes or no? Mine is longer soft than yours is hard. A thousand bucks?"
Abe said, "Okay, okay. I'll take the bet. How long is yours soft?"
Sam answered with a wry smile, "Eleven years!"