A cute funny

This is a video my brother took of my 5 year old son. They had been watching previously filmed video on the little screen on my brother's camera. The screen was turned in the same direction as the lens so others could watch. When the video ended, my brother began filming my son. My little guy was very confused at first, and the funniest part of this video is the complete "a-ha" moment he gets when he realized what he is watching.