Ummm, I have a question

I saw this on someone's blog and would like to cautiously raise my hand and timidly ask, fearful of the answer, how exactly do you play this video game.



Seriously? Any ideas? Anyone out there in the Internets world played this before? Did you feel guilty afterward or invigorated? Is it appropriate to bring "protection" to the arcade or is it made out of anti-bacterial plastic? I'm dying of curiosity here!

Update
Okay, a friend sent me this information about the game. Evidently it's a Japanese phenomenon called "Kancho" and here is a description of it from an American who teaches English in Japan:

Let me introduce you to a game Japanese kids like to play called "Kancho." It's not as much a 'game' as it is kids clasping their hands together, sticking out their first fingers, and shoving them up your butt. I'm really not joking.

Just about any kid can be a Kancho Assassin. Even the sweetest little girl is liable to jam her fingers up your ass the second you turn around. This happened to one of my friends, which just goes to show - don't trust anyone. I'd say the little girls are the most dangerous because they have natural ways of lowering your defenses.

During JET orientation they told me a lot of ultimately useless stuff: what kind of computer to bring, if my DVD's would work, clothing sizes, that kind of nonsense. Nowhere, and I mean nowhere, in the 3-4 months of training did anyone ever mention that at some point, a Japanese kid may try to stick his fingers up my butt. That's something I would have liked to know, personally.

I was pretty lucky. Before I left the US, I bought a really big, really baggy pair of pants. The kids try to Kancho... they just have no idea where my ass is. It's beautiful! One kid tried and his fingers hit nothing but jean fabric and air. Yes! I've also become pretty good at dodging it. Much like Spiderman I have developed a Kancho Sense that tells me where and when it's coming before it comes. I parry fingers like a pro. My record is still 100% Kancho Free. Ha! America 2, Japan 0.

So yes, there is something more dreaded than the Ninja or the Shogun... it's the Kancho Assassin!