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!