︎shit up
n.— «Assaults, when they happened, were generally of a relatively minor nature in comparison: grabbed arms perhaps, a shoulder-barge, the occasional slap, kick—or a favourite with the subversive prisoner, a “shit up,” (the hurling of the saved-up contents of a toilet bucket over the perceived tormentor).» —“Battered by the system” by Erwin James Guardian (United Kingdom) Sept. 4, 2007. (source: Double-Tongued Dictionary)
Further reading
Mary Lou is a former newspaper reporter in Memphis, Tennessee. One of her editors used to say he was off to the salt mines, meaning he was headed to do some challenging work. That expression is a reference to the grim practice of sending prisoners...
If you want to describe people who have an overly high opinion of themselves, here’s some handy Spanish slang: In Argentina, you might describe such a person as Tarzán de maceta, or “Tarzan of the flowerpot.” You might also call...