Your mom, your friends, heck, even the salesman warned you that this bike is too powerful for a beginner. You didn’t care. How hard could it be? You’ll just take it easy leaving the dealer and see what it can do later when no one is watching.
There is always someone watching. This guy was either trying to do a sick burnout or is just really bad at operating a clutch. Either way, he is lucky the bike launched out from under him instead of flipping over with him still attached. Besides a scraped up ankle and eternal embarrassment, this guy got off easy.
Also, if your helmet comes off that easily, it probably won’t do much next time when the bike takes you down with it.