1337Kid Share definition Flag A kid who's leet, generally 5 or 6, and talks in IM Language...out loud (EX)KC: Do you want carrots 1337Kid: NTYn00b: I really like pie do you like- 1337Kid: STFU. 1337Kid by 22WST July 27, 2009 0 0 Get merch Get the 1337Kid mug. Buy Now — $32.95 See more merch