First words?

A friend of mine classifies the "first word" as the one that is repeated several times. In that case, as I've mentioned, Meatball's first word is CAT (pronounced "at" right now). I subscribe to the REPEATED first word theory because I don't agree with Peanut's choice. He was squirming and wiggling and trying to wrestle his way out of the car seat. After Bub finally got it fastened, she said "Oooo! You're being a little turd!" Peanut promptly replied "TURD." Thankfully, he hasn't repeated it since.