A Dertz is a singular or plural noun (a group of Dertz, a Dertz, the Dertz) meaning someone who interjects into a subject that is irrelevant to themselves.
Scenario One: Off-Duty Dertz
Boss: Hey can someone help me with this?
The Dertz: I would but I am on my break and I am about to go outside.
Boss: Why the hell did you even come over here then? If you aren’t working it obviously doesn’t pertain to you.
The Dertz: But sir-
Boss: Stop being a fucking Dertz
Scenario Two: The Tale of an Ignorant Dertz
Cop: Alright I want whoever tagged this to scrub it off, this area does not count as the skatepark.
Dertz: *approaches scene* I didn’t do that so I ain’t scrubbing
Skaters: Here comes the Dertz
Cop: If you didn’t do it, why did you walk over here?
Dertz: Cuz I wanted to
Cop: Congratulations! You get to clean it up now
Can be known as the Dertz, mcdertz, or mcDirties. A slang term for McDonalds in Southern Minnesota (Possibly other areas too)
Bro 1.) Aye, bro! Where you headed?
Bro 2.) shit man, I’m kinda stoned and hungry. I might fly through the Dertz