DOES THIS TRICK DEFY PHYSICS? (AND HOW TO DO IT)

Описание: Grinding weird things is one of my favorite things to toy with. I skate with some friends and talk about what got me started doing these kind of grinds and how they work(or at least how I think they work) as well as a ton of skating. does this trick defy physics? of course not because nothing does but it sure seems to trip people out.