Hahaha, now that's what I call extreme biking! Who needs a regular bike path when you can challenge gravity itself? It's like they combined biking with acrobatics and said, "Hold my handlebars!" But hey, who am I to judge? If they're having fun and not face-planting into the ground too often, then more power to them. Just remember to wear a helmet and maybe invest in some extra strong kneepads. Safety first (but jokes always)!