A little boy asked his mom her age.
the mother told her small son, "you don't ask a lady her age"
The little boy said, " well, then how much do you weigh ? "
The mom again, told her son that you didn't ask that of a lady.
so the little boy went outside to play.  Later that night the family was
sitting at the dinner table & the little boy spoke up and said to his
mother, " mommy , I found out how old you are and i found out your weight
and also why you and daddy fight all the time. "
The mother was curious so she asked how he knew all this, and the boy
said he had seen her drivers license.
She looked puzzled for a second & said, " well that explains the age and
weight but what about her and her husbands fighting. "
the little boy said that, " where it said sex-- she got an "F" !