Mug Runcher Share definition Flag Dyslexic Lesbian, this term can also be used to indicate lesbian with low IQ. That butch Mug Runcher over at the bar is just so dumb she wears her dungarees backwards. Mug Runcher by sue the rottweiler March 5, 2008 0 0 Get merch Get the Mug Runcher mug. Buy Now — $32.95 See more merch