In a small town in alabama, joe bob decides it's time for his cousin, 19 year-old Billy Bob, to learn the facts of life. He takes him to the local house of ill repute, which is fronted by a beauty parlor. joe bob introduces Billy bob to the madam, and explains that it's time for his indoctrination to sex.
The madam says, "joe bob you've been such a good customer over the years, I'm going to see to this personally" So the madam takes Billy Bob by the hand and leads him upstairs where she completes his deflowering. Later, as they are walking downstairs, the madam says "Since this is your first time, I'm going to see that you get the full treatment before you leave, I'm going to give you a manicure."
Two weeks later, joe bob and Billy Bob run into the madam on the main street. Billy Bob is acting a littly shy, so the madam smiles and says, "Well, Billy Bob, don't you remember me?" "Yes ma'am" the boy stammers, "you're the lady that gave me the crabs and then cut off my fingernails so I couldn't scratch 'em"