Right Foot, Left Foot

We were getting ready to run to the store today and Casha was sitting at the bottom of the stairs putting her socks and shoes on.
She happened to be putting her right shoe on her left foot so I told her that she needed to switch her shoe to the other foot, her right foot. She looked at me, pointed to her left foot and said, "This is my right foot and", while pointing to her right foot said, "this is my left foot."
I attempted to correct her and pointed to her right foot saying, "This one is your right foot."
She looked back up at me after paying very close attention to what I'd said and told me, "I changed my legs." and went about putting her shoes on.
I about fell over! LOL