Used to describe the inordinate amount of time in can take for an extremely pissedperson to stop talking and fall asleep. Derived from old cowboy films where a hero was shot and would then talk about life and the universe for ages in an attempt to give their death meaning and generate sympathy.
when driving country roads late at night and approaching a four way intersection, instead of stopping, you turn your headlights off to see if headlights are coming from the other directions: no lights means green lights.
While evading the laws, I cowboy stopped at two intersections going 85mph.