Mang-er-rang Share definition Flag A term of greeting between two acquaintces or "Bros".Used when saying hey!I got mang-er-rangitis! Ethan: What's up mang-er-rang!Jordan: Nothin much bruh chillin watchin Pokemon. Ganj c: Mang-er-rang by Eth-ampe December 27, 2011 Get the Mang-er-rang mug.