The exasperated mother walks away as the two friends begin to play. "My Mom won't tell me anything about her," the little girl says to her friend.
"Well," says the friend, "all you need to do is look at her drivers' license. It is like a report card, it has everything on it."
Later that night the little girl says to her mother, "I know how old you are, you are 32."
The mother is surprised and asks, "How did you find that out?"
"I also know that you weigh 140 pounds."
The mother is past surprised and shocked now. "How in heaven's name did you find that out?"
"And," the little girl says triumphantly, "I know why you and daddy got a divorce."
"Oh really?" the mother asks. "Why?"
"Because you got an F in sex."