Little Johnny asks his mother how old she is.
Her reply is, "Gentlemen don't ask ladies that question."

Johnny then asks his mother how much she weighs.
Again the mother's reply is, "Gentlemen don't ask ladies that
question."

The boy then asks, "Why did daddy leave you?"

To this, the mother says, "You shouldn't ask that," and then sends him
to his room.

On the way to his room, the boy trips over his mother's purse. When he
picks it up, her driver's license falls out. The boy looks it over and
goes back to his mother saying, "I know all about you now. You are 36
years old, weigh 127 pounds and daddy left you because you got an 'F'
in sex!!!"