bluetooth radar employed in airport or other mass transit location / social setting. acceptance of the device connection request means immediate "wanker" status.
getting a connection to an unsuspecting recipient using the "wankfinder" monicur, then quickly sending a piece of priceless filth and having it accepted before they realise their folly.
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.