I think somebody tried to explain the concept of “phone sex” to the Japanese, and they got confused. Or maybe the phrase “Hello Pussy” was mistranslated.
Either way, your phone just gained the ability to get a lot more slutty. And you thought setting it to “vibrate” was suggestive.
Note how the male briefs style is reversible, so you can choose whether you want a crotch bulge or a cat face on your virtual crotch. Not sure what’s up with the extra button protector, but I assume that it’s an apple to symbolize getting kicked the hell out of the Garden of Eden.