Define I'll Rip Your Head Off And Shit Down Your Neck Meaning

I'll Rip Your Head Off And Shit Down Your Neck
A person, or entity, seperates your head from your body and thereafter takes a dumb that glides down your neck.

From the Duke Nukem game, said by Duke Nukem (ingame character).

I'll rip your head off and shit down your neck!
By Lauree