The actions and emotions a person shows when they are on the toilet and trying to shit something big...and it hurts. Similar to the emotions and actions while preparing for a roller coaster dive with the rejoicing hand raise at the end (woohoo!).
I didn't shit for days but when I did it was a roller coastershit!
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.