A Dirty Oreo is a sexual act where a masterbating man sticks his finger in his ass and then wipes his fecal matter all the way around a womans mouth while ejaculating into it.
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.