Coopaloop, also known as "Poopaloop" or "The Shit Ring" is when a male proceeds to defaecate on a females torso, shaping it into a circle with ones hands. Once the circle is complete, the male then ejaculates into the circle.
The name given to one with Coop-like characteristics. One of the more prominent characteristics is the coop-like luck. A Canadian Coop is called Coop-eh-loop. They are generally observed as having curly hair and glasses.
That curly haired kid with glasses is without a doubt a Coop-A-Loop