One day, an older father discovers his son's Viagra in the medicine cabinet. So, he asks his son, "Can I try one?"
The son replies, "Sure Dad, but you'd better make the best of it because they cost ten dollars a piece."
"Oh, that's fine," the father says, "I'll give you the money at breakfast tomorrow."
The next morning the son comes downstairs for breakfast and finds, under his plate, an envelope containing one hundred and ten dollars. So, he says to his father, "Dad, I told you the pill was only worth ten dollars."
"I know," the father replies, "the ten dollars is from me. The hundred is from your mother."
