"Characters include: Ex Girlfriend, Ex Boyfriend, Gangster, Mother-In-Law, Gold Digger, Prostitute, Child Molester, Con Artist."
OMG
Fun for the hole - er - WHOLE family...

This is a strange cultural thing. When you're a kid in Japan, if you catch someone (your brother or sister etc) bending over, you poke them just like that, except they usually use both hands together. Interlock your fingers, palms together, and point your index fingers forward, supported against each other. It makes your fingers much more rigid, for extra poking power! (Yes, I'm married to a Japanese girl, so I get to experience the cultural insanity first hand. But hey, they have like 3 murders a year over there, so they're doing something right...)
I can imagine where the name came from. You know the joke where the guy on a tribal island gets senteced to "death--by oonga boonga!" Japanese folks always thing it's Boonga Boonga...