Tattoos on a gentleman or lady that would insinuate that they are a tool. The best identifier is a tattoo of barbed wire, the persons last name, a heart, unicorn/dragon, or trampstamp.
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.