The process of sticking your cock, finger,
toe, tongue,
nose, and/or fist, in a
woman's (or man's if your into that kind of thing) anal cavity and heaving your whole body in a circular motion.
Steve gave Catherine/Carl a
Chocolate Swirl that was so intense it tore a hole the size of a grapefruit that continuously bled and became quite infested with bacteria, fungi, crabs, yeast, and pubic
hair; and discharge. Eventually leading to her/his sexual demise and
rue.