A thick, sticky, dark brown substance with putrid ripe stench oftentimes found within the area between a person's asshole and genitals.
Holy fuck, what smells like a decaying corpus?" "Off courrsee it's the Grundle Tar stuck to Horvach's gooch!!!
by D. P. Dot Dirtbag October 3, 2010
Get the Grundle Tarmug. Similar technique to the dirty Sanchez with the difference being where the lint, cheese, and or sweat is scraped from ones grundle area and smeared under the nose or across the mouth of an unsuspecting individual to simulate a mustache or grin of grundle goo.
After a laborious day at work, upon arrival at the divorce lawyers, I greeted my ex wife with a sour grundle grin.
by Basismskister June 28, 2014
Get the Grundle grinmug. My girlfriend was laying in bed because her head was spinning from the vodka she drank so I had to have her stand up to give her the grundle stiltskin she would never forget.
by Forge69 January 18, 2009
Get the grundle stiltskinmug. During a fart, when air is compressed between the grundle and a hard surface- the air erupts to the nearest exit, usually out the front of the crotch. It is thunderous, not just for the thunderous noise it makes, but also because of the unsettling direction of the blow.
by ceegee2 January 23, 2013
Get the Thunder Grundlemug. by Gicky September 4, 2007
Get the grundle puntmug. by Jimmy Dean May 16, 2004
Get the Grundle Schnacksmug. When someone is rubbing your grundle or sack area intensly, and you chafe to the point of bleeding and then you let out very thunderous bloody shart onto your partners face.
by Peter Boardman October 8, 2005
Get the grundle thundermug.