I think this lovely booger added "up" to his vocabulary. (Putting us at a grand total of 3.5 words with "mmm" for a cow sound only racking up 1/2 a point.) What do you think? It may be a "humph" which is no news at all.
In other news, he has also added waving, hugging, and holding the phone to his ear while repeatedly saying "yeah" to his bag of tricks. Then there is this adorable fake laugh he does. If you saw it in a photo you would swear he was bawling. He is cruising around really well, but no wobbly first steps yet.