A 10 year old boy with a dead frog on a stick walks up to a brothel

He knocks on the door, and the madam answers. She says "I'm sorry, we can't serve a boy as young as you here."
The boy hands the madam a crisp 100 dollar bill, and she says "right this way."
The madam lines up her best girls, and asks the boy to choose one.
The boy asks "Do any of them have herpes?"
She says "No! Of course not. None of our girls have herpes."
So the boy hands her another 100 dollar bill and the madam says "right this way."
They walk into the brothels kitchen, and there is a fat girl scrubbing the floors.
The boy asks "Does she have herpes?"
The madam says yes, so the boy hands her yet another 100 dollar bill and they go into a private room.
The boy comes out 15 minutes later, and the madam asks him "I don't understand, you're so young! Why would you want herpes?"
The boy replies, "Well, I'm going to fuck the babysitter, the babysitter is going to fuck my dad, my dad's going to fuck my mom, my mom is going to fuck the mailman who killed my frog."