A person who is over the age of 18 & may or may not live on their own (most of the time they don’t live on their.) They might pay their cell phone bill ( that being the only bill they pay if they still live at home with their parents.) They still need help knowing how do everyday things that “ACTUAL ADULT ADULTS” do
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.