Guy: stupid people who don't know how to spell pneumonoultramicroscopicsilicovolcanoconiosis
Guy 2: I'm not stupid because its the longest word in exsistence!
Guy: OK! But its true because the name of this "NEW WORD" is called that!
Guy 2: But it says you're not really stupid!
Guy: Oh yeah, I guess so... Hah?
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.