Terrible Two's?

I always thought people used the term "terrible two's" as an excuse for bad behavior.  I'm not so sure that  is accurate... and I think we are getting a taste of them early...
Georgia is precious, but man she can baffle us sometimes!  I particularly like when she throws herself on the ground and cries/screams.  Where do they learn this behavior?!?!  It's not like Mark and I have modeled it to her!  Thank you Lord for patience - send lots of it our way!!!