Video - How do British butlers duel?
I don't know, but I think the butler did it. There, mystery solved!
A butler-off is when butlers duel in skill. A butler's duel is when one butler offs another.
A butler must always be prepared to a sudden butler-off. Because being a butler isn't simply a job: it's a permanent lifestyle definition.
However, in the case of a butler's duel, you can be quite sure that the butler did it. There, mystery solved!
And never bring a gun to a napkin fight. You could be disqualified from... butlering.