Possibly the worst insult there is. I am most likely breaking the law by writing this definition. Please only use this insult in a very serious conversation, as anyone who is easily offended will get you punished.
"God, Karen is an actual meaniepants"
"Uh.. You do realize what you just said, right?"
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.