Two old men were sitting on a park bench discussing their love lives. One told the other "I had sex with a 30-year-old three times last night!" "Wow" his friend said "you must be using that Viagra". "Nope" the man replied "I know a secret: wheat bread. Eat lots of it and you can make love for hours. The second man dashed off to the nearest grocery store and bought eight loaves of wheat bread. At the checkout counter the cashier said "That's a lot of bread. It will probably get hard before you're done eating it all". "Well, I'll be damned" the man said. "Does everybody know about this but me?"