"Comb" is not a synonym for "shave."
When you come right down to it, growing up is really just a long series of lessons. We learn not to touch the burner on the stove. We learn not to run with abandon on ice-covered sidewalks. We learn how many times we can get away with poking the dog in the face. And we learn not to attempt combing our hair with electric clippers. Well, some of us do. A lot of us don't need that particular lesson. This kid does, apparently. And that's fine. He'll wake up tomorrow a slightly wiser and considerably balder person:
Thank god we have parents around in those formative years to pick us up when we fall, dust us off and post incriminating video of our shame to the Internet.