Here we are in the classroom. The teacher says, "All right, class, it's time for Sex Education," and she draws a huge penis on the blackboard. She says, "Can anyone tell me what that is?" Dirty Johnny stands up and says, "I can tell you what dat is. It's a penis. And you know how I know? My old man's got two of 'em." The teacher says, "Two of them? Are you sure?" Johnny says, "Of course I'm sure. The little one he uses to pee, and the big one he uses to brush the babysitter's teeth."