A fork of Rural Dictionary
To fall to your death as a result of negligence or stupidity. The term comes from Urban Terror, a popular free online FPS.
"Joe decided to do the lemming thing rather than face us in battle." "What a coward. Or maybe just an idiot."
The correct answer to the question "What's up?" In 3-dimensional Cartesian terms, the x-axis is east and west, the y-axis is north and south, and the z-axis is up and down. So the positive z-axis is what's up.
Guy 1: "What's up, man?" Guy 2: "The positive z-axis." Guy 1: *rolls eyes*