blump-kin (adj.)
The description of an action or event that is so incredible that it can only be accurately described or compared by the reception of a blow job while shitting.
word origin - "BLUMP" Old French Porn -, "KIN" - Middle English, Blump-kin Urban Dictionary
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.