How can I assure hanging is near instant?

[DesperateOne]

I've heard people saying it takes minutes to pass out, but if the rope restricts the blood flow successfully you can go out in mere seconds. So how do I achieve the second?

 

[HouseofMortok]

Carotid Arteries

 

[Abyssal]

You're looking for the full drop neck snap thing, right? I've heard unreliable stuff on that. If you want instant hanging isn't it. Even the painless stuff is still a moment of extreme discomfort let alone si