brown-colored fecal residue that accumulates within the anal area as heat is generated between the butt cheeks, and mixes with anal perspiration, usu. during strenuous activity, or during a hot day. Is usually a by-product of swamp ass.
After defecating and wiping 64 times, my rectal area appeared to be as clean and pure as the white-driven snow. However, an hour later, as the the heat and humidity increased, this just wasn't the case. My swamp ass generated a little axle grease, as evidenced by the bacon strips on the inside of my underwear (which were the size of Rhode Island.) Shootin' hoops for lengthy periods can contribute to this deplorable condition as well.