I've seen this before and I must say you are all (Well all the ones that I could tell) are operurating under a misconseption.
First of all lets fix one of those. That is the incorrect link for this movie. Let me give you the correct link so you can see the rest of his movies.
Angry Naked Pat: Ice Cream Fantastic
The next misconseption you have is his age. He is not a kid, and is not spoiled by his parrents. He is a full grown adult that suffers (actualy I don't think he suffers... but he has a) condition that makes him look like a young kid. He uses this for his comedy, and so yes alot of it does look childish. But some of that is because people think he is a kid.
Check out his video
Old Habbits Die Hard to understand how his mind works for his comedy. This one is alot better than the Supper Bowl is Gay one, the only reason the Supper Bowl is Gay is sooo cool is that it actualy aired on TV and he did a follow up for it on national Telivision.
You would be amazed after watching his videos at how much people treat him differently just because he looks like a kid. He knows people will treat him like a kid, so he acts like a kid in front of the camera and puts it up online.
(Don't read this post further until you watch Old Habbits Die Hard)
Sure you could say that he was acting like a kid and that was why they didn't sell him the cigs, but remember he wasn't acting like a kid when he first showed them the ID, and they still told him no. Also ask yourself why would he take his camera with him to go cig shoping unless he knew their was a good chance he would not be sold cigs. So ya, he might act like a kid on camera, but ask yourself isn't that just because the world treats him like a kid? I say as long as Andy Milonakis isn't treated like an adult that he should feel free to act like a kid.
Sure he's got alot of crap videos, but there are a few gems in the ruff that give you great insight about our world.