Burzum is the Norwegian black metal project founded in 1991 by Varg Vikernes in Bergen, and it became one of the best known names from the early Norwegian black metal scene. The word itself has spread far beyond album contexts into metal forums, edits and soundboards, where naming the project alone works as an in joke. This short shouted version strips away any music and leaves only the reference, which is why creators reuse it as a quick signal for extreme metal humour and fandom.