Definition & Meaning of "jit stain"in English

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

"jit stain" is a vulgar slang insult that emerged in late 20th–early 21st century English, likely in North American informal speech and online culture. It combines "jit," a slang term often meaning a young or insignificant person, with "stain," implying something unwanted, dirty, or of no value. The metaphor suggests someone so worthless they are little more than a mark or residue. The term is used in hostile, mocking, or joking contexts to demean someone seen as insignificant or contemptible. It is clearly derogatory, crude, and never neutral, relying on insult rather than description.