Doctrine based on Ned Flanders' ideas, very similar to political correctness, where an individual or a collective tries to impose his own self-censorship and ideals on the rest of society. This is especially visible in the case of certain lobbies like those of the homosexuals, feminists, pro-life activists, anti-racism organizations, and certain charities.
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?"