I mean, where do you start with this? I don't want to get hyperbolic because he is just a high school senior. He won't make it to campus for at least 10 months, which puts things into perspective. But he appears to have double jointed ankles. I was going to say that he was a wizard like Harry Potter, but we all know that wizards (like Santa and unicorns) aren't real. Double jointed ankles do exist, so that is how I choose to attribute what happens in this video. Because everything in it seems at the very least improbable, if not downright impossible.