If you're dealing with any sword-oriented media, whether it be fantasy, medieval, kung fu, or something else, and it's more violent than a PG-13 rating, chances are, someone is going to get his head chopped off (and it may not even need the R rating if you're dealing with nonhuman enemies). One of the most common methods of execution back in the medieval era next to hanging, decapitation is usually one of the surest ways to ensure someone is Deader Than Dead barring some very potent magic or divine intervention. Examples of Off with His Head include: