look up any word, like cleveland steamer:
 
1.
This phrase is a verbal objection to a proposed action, claiming that the author/speaker is willing to fight with every ounce of their life to prevent the action.
You want to take my kids away from me? Over my dead body!

*whips out a shotgun*
by Gumba Gumba April 14, 2004
 
2.
you won't be able to do it if I am alive to prevent you
Your going to give in to peer pressure? Over my dead body.
by Light Joker December 15, 2005
 
3.
If you say something happens over your dead body, you mean that you will stop at nothing to prevent it from happening.
John: i wana bang your sister, honey!

Wife: (pissed) over my dead body, remf!

John: (thinks) well, I couldn't have described your body better...
by Macho--man July 26, 2010