Going postal

Going postal is the act of becoming extremely and uncontrollably enraged, often to the point of violence. When someone's gone postal, chances are any bystanders should save their breath and just fucking run instead of begging for mercy they will never be spared.

Did You Fuckin' Know?

 * Despite the amount of edginess involved in going postal, most who go postal were never edgy to begin with. This is because long-established edgelords have either been postal their entire lives, or are able to keep their edge under their control (yeah, right).