This may well could be deemed Munch's first official word, and I missed it!
This morning, Hubs and I dropped Munch off together at day care, and I was standing outside the car waiting for Hubs to pull him out of the car seat. A lawn mower roared nearby, and I have shoddy hearing on a good day. I saw Munch throw Pooh on the seat and then he pointed and said, "Uh oh!" Hubs heard him, I only heard a couple mumbles.
Amazing! He's made these sounds before, the uh and oh and uh uh uh oh, but this is one of the first time it was clear the meaning and intent was spot on.