How Did I Get Up Here?

I had not had a chance to put the ladder away after I cleaned the bathroom (don't ask, you don't want to know). So the ladder was sitting out and Lily chased K.C. to the top. When he was on the top he looked at me and cried. He wanted help. But then he climbed back down on his own. Since then he has been going up and down the ladder a lot.I am not sure how this happened?
Stop taking pictures and help me!