A kidiot is a combination
kid and idiot; basically a
kid that has so little a clue as to what he/she is going, that they just BS their way through it.
Synonyms:
flamer, Patamonkid
Some Kid: Did you hear that new Pokemon game just came out?!
You: Dude... STFU... Pokemon is
gay.
Some Kid: NUH UH! im
gay im
gay blah blah blah I WIN!!! POKEMON ROX!!!
You: Bah. Riddled by another kidiot... I feel dumber just by being in your presence!