Meaning: This term is commonly used in chat rooms, on Facebook and in Online forums to indicate someone who will die soon. It came from the Star Trek television show where anyone wearing a Red Jacket when on a mission to a new planet would often die. The guy in the red jacket was always a new actor – not a regular on the show, so if someone had to die as part of the plot, it would be the guy in the red jacket.
Example: “I felt like a Red Jacket when my boss found me sleeping at my desk. ”