A sexual orientation in which one is sexually attracted to the virtual popstar hatsune miku and variants of her. Mikusexual people can be attracted to hatsune miku, mikudayo, shiteyanyo, zatsune miku, hatsune mikuo, hachune miku, and other fanloids designed to represent miku. Not included is kagami kawaiine, because she is not miku chan san tan samakun, and other fanloids not designed to represent miku.
when you're holding up your phone and making faces at it, as though you are taking a selfie, but you're really taking a picture of the person across from you or the wall or anything else that seems interesting but you don't want to be caught dead taking a picture of.
This action is often made more convincing by wiggling the eyebrows or opening the mouth, to pretend you're trying to get a Snapchat filter to work.
FRIEND A: "Did you just take a stealthie of me?"
FRIEND B (turning phone around): "no I was just using snapchat's new filter, see?"