Whyyyyyy?

....is my 1-1/2 year old daughter's favorite new thing to say. It doesn't matter what I say to her, she responds with "Whyyyyyy?" in her cute little baby voice. It could be something like "We're having Hershey bars and ice cream for supper". She'd ask why. The best part is I can answer with "Because I said so" and she'll just say "Ok" and go on her way.