a rather large individual, who has severe perspiration problem - causing a tsunami of sweat around ones rectal area (normally showing through light coloured clothing and causing and almighty stench when in non ventilated areas).
Sufferers of 'greasy hoop' are generally unhygenic individuals that have very prominent brown, curled toenails and a very distint aroma (generated from their 'greasy hoop')
Flaming pancakes Batman!!!! Look at that greasy hoop!!