Definition & Meaning of "pisskidney"in English

What is the origin of the term "pisskidney" and how is it used?

"Pisskidney" is a slang insult that likely emerged in English in the late 20th or early 21st century, combining "piss" with "kidney" to create a vivid image of someone as worthless, disgusting, or contemptible. The metaphor draws on bodily disgust, linking an internal organ associated with waste processing to a person's character. It is used in informal, hostile, or humorous contexts, such as online forums, casual speech, or comedic writing, to express strong disdain. The term is highly derogatory and intended to insult; it is never neutral.