A girl (or guy) who's always got one hand holding a dude's cock and the other digging in his pockets. They are completely unable to sustain themselves on their own and are closer to being parasites than human beings.
Person 1: Whatever happened to that hot chick from high school?
Person 2: She realized that she couldn't do anything else useful for society so she just became a cockholder. I see her at the bar with a different dude every night, and he's always buying....
A person you hate intensely not because they deserve such hatred but because they serve as a focus for your general hatred. A healthy way to dispense with excess animosity.
Jake's not really that big an asshole. He just serves as my hate sink.