Knob Snot Share definition Flag A viscous liquid salty to the taste that leaks from the end of an over excited penis. He wiped his Knob Snot on the inside of his trousers rather than use a tissue. Knob Snot by Squinks February 3, 2010 0 0 Get merch Get the Knob Snot mug. Buy Now — $32.95 See more merch