When you swirl your tongue around the anus of a rat. Your tongue goes in too far and you kill the rat from fecal obstruction. You then suck out the rat's intestines and vomit them into your grandpa's butthole. Your grandpa then eats a gallon of dog scat and poops on your girlfriend's face.
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.