manogyen Share definition Flag man-o-gyen: is a gas created by true men every time the breath they release manogyen in the air. then any man in that area breathes in that manogyen and thus is able to live. DUDE! I just was near Chuck Norris and filled my lungs full of manogyen manogyen by dicer117 August 21, 2010 0 0 Get merch Get the manogyen mug. Buy Now — $32.95 See more merch