Sleepxagnomungus Share definition Flag To live by the words of an allmighty Romanian man who goes by the username "sleepy". Guy1: yo dude I made a plane in factorio Guy2: *gasps* you didn't Sleepxagnomungus ? Bloody heretic Sleepxagnomungus by YaBoiBongo July 19, 2018 0 0 Get merch Get the Sleepxagnomungus mug. Buy Now — $32.95 See more merch