when you are in a fight, the opponent tries to kick you and you grab their leg, you then take your thumb and your index finger and "pick" off their tesicles like beans.
Ted: So Jack how did you do in that fight with Timmy.
Jack: He was being cheap trying to kick me so i gave the columbian beanpicker.
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.
FRIEND A: "Did you just take a stealthie of me?"
FRIEND B (turning phone around): "no I was just using snapchat's new filter, see?"