Broldong Share definition Flag (Brawl)-(dong): When you and a friend get into an argument about whose dick is bigger and ends up in an all out slap battle of the fittest dong. “Yo me and my bro got into a massive broldong the other day and now my dong is ripped” Broldong by DkWw019 October 19, 2018 0 0 Get merch Get the Broldong mug. Buy Now — $32.95 See more merch