I swear, I never imagine someone playing badly because they're a certain age. I'm sure there are kids who are rather good at this game, much like all videogames.
I do hate them on the mic in the game chat. That "DON'T KILL ME! DON'T KILL ME! DON'T KILL ME!" and the teenage girl at Justin BIeber concert scream gets old quick. Prolly not as old as the asshole playing music over the chat line, but old nevertheless. Also hated: people plaing "characters," like guys imitating little kids.