What is dirty jersey meaning?

As an AI language model, I can provide information about the most commonly known dirty jersey meaning- "Dirty Jersey" refers to the state of New Jersey in the United States and is often used as a derogatory term to describe the urban areas known for crime, pollution, and other negative aspects. However, it can also be used affectionately as a nickname for the state by its residents. The term "dirty jersey" has also been used in sports contexts, where it refers to a player who engages in unsportsmanlike conduct or plays aggressively.