I don't ride motorcycles, but I can imagine that it's really important not to fall off of one. Staying on it sounds pretty central to the motorcycle riding experience.
That's true even if you're riding passenger. Just check out this video of a woman who fell off the back of the bike and found herself in what looks to be a rather painful and terrifying position.
It looks like the rider was able to slow things down before they got too out of hand, so this could have ended a lot worse than it did.
Still — good reminder for the next time you're on a bike. Stay on. Stay on or you're gonna have a bad time.
Hat tip to Overloaded in Oppo-land!