You don't necessarily have to be a kid to experience "kid rage". It's the event where you get so angry, frustrated, upset, etc. to the point that you rip all the things off your bedroom walls. You delete numbers from your phone, delete your MySpace, Facebook, Twitter, etc.
Then later on you regret it, because you only did it in the moment of rage.
"Dude, don't go all kid rage and throw shit away or delete your MySpace because you're pissed off."
"She hella went kid rage last night and ripped all her shit off the walls."