As everyone knew, Jeff was obsessed with his knife, and you had a tendency to steal anything that looked shiny or vaguely interesting, not ever intending to give it back. So, if you ever got your hands on that knife, all hell could break loose.

Unfortunately, that's what happened. You somehow got hold of his knife and put it with your collection of other objects. Later that day, you hear Jeff yell, "WHERE THE HELL IS MY KNIFE!?"