Grandpa and Grandma were visiting the kids overnight when Grandpa found a bottle of Viagra in his son's medicine cabinet. He asked his son about trying one of the pills and was told, "I don't think so, Dad. They're prescription, very strong and very expensive."

"How much?" asked Grandpa.

"They're like $10.00 a pill," answered the son.

"I don't care" said Grandpa. "I'd like to give your mother a big surprise. I'll leave the money in your coffee cup in the morning."

The next morning the son found $110.00 in his mug.

He said to Grandpa, "I said each pill was ten bucks, not $110.00."

"I know," said Pops. "The extra hundred is from Grandma."