Flat frog on a string.

A little boy walked down the sidewalk dragging a flat frog on a string. He came to a whore house and knocked on the door. Once in, he said, "I hear all the men talking about having to get shots after Amber. THAT'S the girl I want." Ten minutes later he came back dragging the frog, and headed out the door. The Madam asked, "Why did you pick the only girl in the place with a disease" He said, "tonight when I get home, my parents are going out for dinner, leaving me at home with a baby-sitter who will have sex with me. Dad will take the baby-sitter home and jump the baby-sitter's bones, and catch the disease. Dad and Mom will have sex, and Mom will catch it. In the morning when Dad goes to work, the Milkman will stop for a quickie with Mom and catch the disease, and HE'S the son-of-a-bitch who ran over my FROG!"