Duwang began as a JoJo community in-joke, a mangled rendering of Morioh, the town at the centre of Diamond is Unbreakable, that fans turned into a running gag. Vinesauce streamer Joel picked up the joke in his JoJo-related content, where his deadpan delivery helped turn the place name into a catchphrase. From there it spread through edits, reaction clips and stream highlights, and it still works because it instantly signals JoJo fandom while sounding absurd to anyone hearing it for the first time.