the Doombox is a behavior exhibited by those with ADHD, a Doombox is formed when a person has a certain amount of random items they have no set place for, so they will convert an unused space (drawer, box, empty shelf, ect)
into a Doombox, and as more and more items are accumulated, more Doombox's will be created. The Doombox is an unstoppable force of chaos that seeks to clutter one's storage.
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.