The Grut Share definition Flag 1. When the sweat from a mans sack runs down his leg and eats away the elastic in his socks.2. Another term for chaifing or swamp ass. Guy 1; Why are you walking like a cowboy?Guy 2; It's the humidity man, I got the grut! The Grut by Biohavok May 1, 2009 0 0 Get merch Get the The Grut mug. Buy Now — $32.95 See more merch
