BINGO!!!
Actually, most of the TF2 I am playing (ya, I know, not CoD) is with people in their 20's. Anytime a 12 year old squeeks up and thinks they can talk smack it is pretty easy to cow them with simply "yo momma" and "that's what your mother said" jokes.
You do not even need to be vulgar.
They just can't handle a true put-down, especially if you remember what they say and use it back against them. You can have the entire board laughing.
The only key is, don't insult them directly. Only on their social cues. If you start saying they are a bad person you could end up with a pistol-sucker on your conscience.
