Seeing a headless body in your dream or dreaming of being headless denotes that you are thinking unclearly or that you are facing mental pressure.
If you are naked and headless at the same time in your dream, it can imply that you trust others too much that you become too gullible.
Dreaming of being headless with a part of your body wounded or burnt can suggest that you have put yourself in harms way due to your mindless actions.
Dreaming of a headless horseman may imply that something negative is influencing you during your waking time. It may also mean that something in your life will end soon.
To dream of yourself being the headless horseman represents your heightened sense of power or that you are keeping something a secret.