Lyric discussion by TomPowers724 

Cover art for Dethbed lyrics by Alkaline Trio

I agree with HappyTrash's interpretation, but there would be no reason for matt to just make up a murder story like that, a good song writer always throws in the old double-entendre. I think that the whole song is just a big metaphor for what happens when you get put on the receiving end of a bad heartbreak.