Somehow, medical experts managed to determine what decapitation feels like for victims. Based on their findings, losing your head doesn't sound so fun in the literal sense. According to reports, decapitation never goes all that swiftly for the victim. The pain lasts a few seconds after the initial slice, and your head may twitch or even bite. Witnesses have repeatedly reported severed heads seeming to retain some semblance of consciousness for moments after the physical separation.
That presumes, of course, a quick cut. Historically, that's not something to take fro granted. In its time, the guillotine was considered humane because it sliced all the way through the neck quickly, but anyone being beheaded by a different means could expect the pain to be drawn out horrifically. Mary Queen of Scots famously required three separate strokes to remove her head, and she's just one notable historical example.
Additionally, there's more than one way to lose your head. Another process called "internal decapitation" is also possible and, yes, just as terrible for you. What is internal decapitation? Pretty much what it sounds like: the victim's skull parts ways with the spinal column while the exterior remains intact. So though a person appears to be in one piece, they've functionally had their head cut off.
Because science apparently never knows when to stop, the process of actually transplanting a human head may soon become a reality. Yes, in a world where heart transplants are common, it was only a matter of time before a full cranial transplant would be in the works. It's theoretically possible to remove a head and attach it to a new body, but it also raises all manner of questions, and experts worry what it would mean to place a new head on a completely different body.
That's just one aspect of decapitation, though, so watch the video below for more info on this thoroughly gnarly way to go.