Do you really think I can't see you?

One of those charming 4 year old behaviors - blowing bubbles in milk. I don't even mind so much, as long as he keeps the milk in the cup. One morning I took Norrie in the other room to change her diaper and when I returned to the table I discovered Conrad had excused himself. This is where I found him. He was so focused on what he was doing, he didn't even see me standing at the door. I appreciate he moved the mess outside, but what a waste of milk!