A word made famous by professional wrestler Bobby Lashley. He meant to say "bastard," but he speaks with a lisp, and instead it came out like "bathturd." It instantly became an internet phenomenon incredibly popular within the Internet wrestling community. It made Lashley full of teh lulz.
"You say your name is Finlay, and you love to fight...well I say your name is Finlay, and you're a bathturd."
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.