When a game features catgirls, it's probably not surprising to hear that people are reacting to it in funny ways. Especially since, in this case, the catgirl game is of the 'sexy' variety.
Damn, they're cute. Not the girl—her ears. She is a catgirl—a female with cat ears. To underscore their feline traits, some have cat teeth,and even cat eyes. In Japan, the cat ears are called "nekomimi", and they're more than a simple personification of cats.