Gustin is doing the cutest thing these days. Though he babbles a lot, he doesn't really say many actual words (my kids don't seem to start talking until closer to 18 months). But, one thing he does say is thank you. Whenever we hand him something, a sippy cup or toy for example, he always responds with "day doo," his version of "thank you". It's too cute and he does it every time. I don't know if he picked it up because I am constantly reminding the big kids to say thank you or because I tend to say it whenever Gustin hands me something. Either way, I'm loving it! I hope he is always this polite!