Outspoken Cabbie

A woman and her 10 year old son were riding in a taxi in New York. It was raining and all the prostitutes were standing under the awnings.
“Mom,“ said the boy, “What are all these women doing?”
“They are waiting for their husbands to get off work,” she replied.
The taxi driver turned around and said “Geez, lady, why don’t you tell him the truth? They are hookers, kid! They have sex with men for money.”
The little boy’s eyes got wide and he asked, “Is that true, mom?”
His mother, glaring hard at the driver, answered in the affirmative.
After a few minutes, the kid asked, “Mom, what happens to the babies those women have?”
“Most of them become taxi drivers.” she said.