When a person is obsessed about being right, or looking smart, to the point they will make up any "fact," no matter how delusional or far fetched it seems
Paul: "Did you know Texas is the biggest state in the U.S.?
Dan: "No, I'm pretty sure Alaska is way bigger actually."
Paul: "No, it's right here in the newspaper, let me find it."
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.