A little morning humor

A woman and her son were taking a cab
in New York City. It was raining and all the hookers were standing under the awnings.
"Mommy," said the little boy, "what are all those ladies doing?"
"They're waiting for their husbands to get off of work," she replied.
The cabbie turns around and says, "Geez lady, why don't you tell him the truth? and he says Their hookers. They have sex with men for money."
The little boy's eyes get wide and he says, "Is that true, mommy?" His mother, angrily glaring at the cabbie, answers "Yes, they do".
After a few minutes, the kid asks, "Mommy what happens to the babies those ladies have?"
"They become cab drivers," she replied.