Beef Brondo Share definition Flag Is a Bro who is exploding with muscle mass and is physically better then everyone else. I was at the gym yesterday and this beef brondo destroyed the bitches by flexing his abs and biceps. Beef Brondo by briondo beach brondo August 11, 2010 0 0 Get merch Get the Beef Brondo mug. Buy Now — $32.95 See more merch