It can also be a gruop of people who are extremely obnoxious, so obnoxious these people talk a language of their own, similar to some other languages but it sounds like complete giberish.
Wow, dude that guy is talking jackknocker again, fuck i hate that jackknocker.
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.