OK, OK, OKAY!

I can't believe it. My 2 and 3/4 year old daughter is becoming a teenager! In the last three days she must have said this (OK, OK, OK) at least a dozen times... what's going on? And it's not just the words (very EMO), it's the whole tone of voice and shrug of shoulder that goes with it. I'm sure I don't so this... oh hold on, there's always Daddy to copy... well, that explains that one then, sigh.