Werjer is basically used if a friend is saying bad joke which usually ends up with no one laughing but themselves it is either the person who made the joke laugh or it just stay silent
person 1: your trash because your standing next to a trashbin, get it?
person 2: dude your such a werjer
person 1: yo wassup
person 2: werjer face
Typically used for a joke for a person whom you know who made a really bad joke but only they laughed at it.
Scenario: Makes jojo reference to Minecraft
Friend 1: Jojo but diamond is literally unbreakable
Friend 2: MINE DOWN MINE DOWN MINE DOWN MINE DOWN. SHINING JUSTICE
Friend 1: Werjer
Scenario 2: Game joke
Friend 2: you know why you are trash?
Friend 1: Why?
Friend 2:It is because you are standing next to trash bin
Friend 1: Werjer