A guy's walking down the street and sees Dirty Johnny smoking a cigarette. He says, "Kid, you're too young to smoke."

Johnny looks up and doesn't say anything.

The guy says, "How old are you?"

Johnny says, "Six."

The guy says, "Six? When did you start smoking?"

Johnny says, "Right after the first time I got laid."

The guy says, "Right after the first time you got laid? When was that?"

Johnny says, "I don't remember. I was drunk."