I don't understand why you all think this video is so offensive. ATM is a part of pop culture more than anything else, and if he wants to joke about the hyperbole (which, in fact, it is more than a metaphor- he is right about that),
what is the big deal? I doubt Vanessa would be highly offended by this herself. The last clip of Vanessa with an open mouth next to a microphone where it says "Not always a microphone" just goes to show that the kid who made this is immature and trying to be funny.
The funniest part is that he failed, that video is not funny at all. It's just a waste of time to watch.