Louisa was a prostitute, but she didn't want her grandma to know.
One day,the police raided a whole group of prostitutes at a sex
party in a hotel,and Louisa was among them. The police took them
outside and had all the prostitutes lined up along the driveway when
suddenly, Louisa's grandma came around the corner. Grandma asked,
Why are you standing in line here,dear?" Not willing to let her
grandmother know the truth, Louisa told her grandmother that the
were there passing out free oranges and she was just lining up for
"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 going 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, rip the skin back and suck them dry."
The policeman fainted.

Alright, that is officially the worst joke I have ever heard. I honestly have no idea why I'm laughing!