There was girl who was a prostitute, but her grandmother didn't
know about her occupation.

One day, the police rounded up a group
of pros and the girl was busted.

The cops had all the girls lined up against a wall of the street
where they were caught soliciting.

Just then the granny walked by
and saw her granddaughter, she asked the girl, "What are you
lining up for?"

The granddaughter, not willing to reveal the truth, told her
grandmother that she was lining up for some free oranges.

Well, grandma, not one for passing up something free, joined the
back of the line.

A policeman who was going down the lineup
taking information from each girl, soon reached the grandmother.

He was stunned and bewildered to see her so, he asked carefully,
"Ma'am, you're rather old to be out here, how do you still do
it?"

Grandma proudly replied, "Oh, it's easy, I just take out my teeth
and suck 'em dry."