It sure look fun! Remmy that they're riding on dirt motorcycle which are lighter than street motorcycles.. If you were riding on CRUISER or TOURING motorcycle, I wish you a real good luck on heavier motorcycle which can hurt unless you're lucky to have crashbar installed. I doubt mine would be safe enough even I have crashbar because my gas tank is WIDE and my legs are spread against gas tank. It's more likely that I get my knee crushed from slip and fall on motorcycle. 
