mcuck Share definition Flag a person who lives in mcuckslavia, hes a serious guy, so keep your eyes onto him. Guy 1: hey man? what is that mcuck doing? Guy 2: well i dont know, lets check himTAK YONNNN mcuck by im the mask guy LOl April 22, 2021 0 0 Get merch Get the mcuck mug. Buy Now — $32.95 See more merch