Grandma and Grandpa were visiting the kids overnight, when Grandpa found a bottle of Viagra in his son's medicine cabinet. He asked the son about using one of the pills, and the son said, "I don't think you should take one; they're very strong and very expensive."
"How much?", asked Grandpa.
"$20.00 a pill", answered the son.
"I don't care", said Grandpa, "I'd like to try one, and I'll leave the money under your pillow."
The next morning the son found $120.00 under his pillow. He called Grandpa and said, "I told you each pill was $20.00, not $120.00."
"I know," said Grandpa, "The extra $100.00 is from Grandma.
