We haven't seen him do that before. I'm not sure if it was a sudden impulse, or if he's been practicing it and wanted to show off. It's not exactly a skill that's going to help him in life, but he was very excited about it.
He did it again, and got down easily both times.
He was so proud of it that he decided to get up on the fence post. Yes, this is what we need -- a sentinel at the gate.
Beware, all ye who enter here...