Bruh, what, epic - commonly used as BWE - is a set of expressions used by respectable gamers who are associated with the most influential gamer organization in the world. Bruh, what, epic has no explainable meaning, it's mostly used to express all sorts of emotions - solely posotove ones.
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.