"Suck an Orange" joke

Lulu was a prostitute. One day there was a raid. All the prostitutes were lined up outside the police station as they took them in one by one.

As Lulu stood in line, she saw her Grandma coming down the street and was so ashamed, Grandma didn't know her occupation.

Grandma stopped to say hi, and asked what the line was for. Lulu, saving face, said that the police were giving away fresh oranges to those waiting Grandma said wonderful, she loved oranges and got at the end of the line.

When the policeman got to the end and saw her, he was amazed. He said, "How the heck do you do this at your age?"

She said "I just take out my teeth, rip the skin back and suck'em dry!"

The policeman fainted.