There was a girl who funded her way through life as a prostitute, but she didn't want her grandma to know. One day, police raided a hotel where a group of prostitutes were conducting a sex party, and the girl was among them. The police had all the prostitutes line up outside along the hotel forecourt when suddenly, the girl's grandma came by and saw her granddaughter.

"Why are you standing in line here, dear?" asked her Grandma.

Still unwilling to reveal the truth to the old woman, the girl told her grandmother that the policemen were simply there passing out free oranges, and she was just lining up for some.

"Why, that's awfully nice of them. I think I'll get some for myself," and she proceeded to the back of the line.

A policeman was making his way down the line asking for information from all of the prostitutes. When he got to Grandma, he was bewildered and exclaimed, "Wow, still going at it at your age?! How do you do it?"

Grandma replied, "Oh, it's easy, dear! I just take my dentures out and suck them dry."