Keller finally asked me today as I told him to go upstairs to find his shoes, "Why?"
I've been dreading this day. Up until now he would occasionally ask, when he saw something he didn't know, "What does that mean?" Kinda funny take on, "What is it?" But I do believe we are into full exploration mode and will hear "Why?" more often.
My other favorite phrase the kid uses now when you try to help him with most tasks, "I such a big boy." In Keller language, "Getta outta my way -- I can do it!"