smegmatron Share definition Flag A person with enough smegma accumulation to kill a herd of cows, and who smells worse than your local cheese factory. Hey Brian...I hope you didn't get anywhere with that smegmatron last night...boy was she a stank. smegmatron by tubbytub June 13, 2008 0 0 Get merch Get the smegmatron mug. Buy Now — $32.95 See more merch