This story reminds me of the time my 65 year old grandmother decided to show us kids the proper way to climb a tree (apparently we weren't doing it "right") She got up just fine but forgot about the arthritis in her hands. As she was hanging from a branch with her hands, they just let go by themselves. She fell about 8 feet landing on her behind. Once my grandfather made sure she was ok (he had seen all this from the house), he just sat on the ground and laughed so hard he cried.
After that, she'd just critique our tree climbing styles from the ground.