If so, I think I've just found my next "must have" title.
Granted, it's extremely doubtful the game in question--Dangerous Jii-san Jya, which is based on the popular Coro Coro Comics "gag manga" that's known as "Grandpa Danger" in the West--will be released in North America, so I guess I'll have buy a Japanese 3DS (or 3DS LL) if I want to play it.
Normally my reaction to such a suggestion (yes, even if I made the suggestion to myself) would be, "yeah, right," but in this case I'm not so sure. I mean, not only does Dangerous Jii-san Jya (teaser trailer here) appear to include a health bar made up of little rumps, but it also seems to feature some sort of "butt blast attack" (see screenshot above) and a character that's basically a pile of poo with muscular arms and legs.
I'm also pretty fond of the Egyptian samurai with a pair of underwear covering his eyes that can be seen here.
As for when this daringly disgusting 3DS game will hit store shelves in Japan: Sadly, I'm not sure, although andriasang.com suggests it'll happen sometime "this winter."
Woe is my wallet should Dangerous Jii-san Jya sport a compelling cover illustration.