(Ancient Greek: Ἀδρήστεια) in Greek mythology "she who cannot be escaped"
In Greek mythology, Adrestia was a minor deity of revolt and equilibrium between good and evil. She was the daughter of Ares and Aphrodite, and sister of Eros, Anteros, Phobos, Deimos and Harmonia. She was often depicted following her father in battles, or next to Nemesis, goddess of divine retribution
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.