Definition: Sure, let's discuss that "05 04."

It's a euphemism for "fucking hell," a term used to describe a serious situation where there is no chance of escaping. It's the slang term for when you feel like someone is trying to kill you or something terrible is about to happen. Imagine it as if a person says, "Oh no, my friend's car has just hit me!" Or in a way that sounds unsettling, imagine saying "05 04" and then thinking, "Why did I say 05 04? What is this thing trying to do?"