When your unwashed ass hairs become matted together and intertwined from sweat and dingle berries. Ass dreads as the tribes native to swampy areas call it. Gorrilla ass is often follwed up with a heavy bout of ass itching, done only through the outside of the trouseres because the smell is so fierce it will stay on any surface it encounters.
After parolling the hot Iraqi desert for weeks with no shower, Sgt. Slapahoe had developed a serious case of gorrilla ass, to go along with his G- DUBS.
the phrase Gorrilla Juicehead was used by JWOW and Snooki on the MTV show Jersey Shore. JWOW went on to define it as a big guy who loves to hit up the gym and possibly uses steroids. Gorrilla juiceheads must be atleast 6ft tall and weight atleast 250 lbs.
The word used to describe an extremely large human faeces. Due to the size of it,it looks like it may have originated from a gorrilla's ass rather than from a person.