Today, I ran out of the bathroom, rubber ducky in hand bragging to Chris that our son is brilliant! Now, when he sees the duck, he smiles and shouts "QUACK, QUACK!" The reason this impresses me so much is that we have never done the quack quack thing with that duck. He learned that ducks go quack from a book with a picture of a duck and he associated it on his own. SO, yep, brilliant. He still sticks his hands in the toilet if you don't close the lid, but nobody's perfect.