They obviously add some of the boys street dialogue later

I remember watching this show with friends like 5 years ago. They have that segment where the Man Show Boy is talking to people on the street, and every once in a while it would end with him saying something really funny, usually as the person was walking away. My friends would be like, "I can't believe that kid comes up with that stuff!" Give me a break, he doesn't. Older, adult writers come up with funny lines, record the boy saying them later, and dub them into the segments as though he actually thought it up, right then and there. You can tell when it happens. First of all, that kid wouldn't be able to come up with that stuff. Second of all, it sounds a little different. Third of all, you never see his face when he says the extra-funny, above his head stuff. And finally- did you ever notice that when he says really clever things, the people he says them to have no reaction? They just keep walking away or say something unrelated, as though he didn't actually say anything. Which he didn't.