Daddy is one of the first words Tyson said. However, new to his vocabulary.... "Steve". He actually says "teve" but it is very obvious what he is saying. Guess I need to do a better job of calling him Daddy in front of Tyson :)
Other words added... bubbles, what is this, duck, quack, moo, baa, probably more but my brain must be too fried to remember them now.
**Update: how could I forget cookie, and the best one (right)... he says "no no no no no" and waves his finger at us sometimes.