The taste you get in your mouth of your last meal promptly after you burp. Usually occurs after consuming something along the lines of hot wings or spaghetti.
I had terrible Deja Food after I tore up a couple dozen wings and kept choking on the taste of them for hours after when i'd burp.
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.