Quick, point to yourself.
Now, where did you point? To your head? Body?
What part of you is actually "you". Like if you were to cut your arm and point to it, you can't say thats you, because thats your arm.
Isn't it your brain? If so, why is it called "beheading"? Wouldn't it be called "de-bodying"?
I may or may not be high right now