I dreamt that I died, but at my fun

I dreamt that I died, but at my funeral i got out of the coffin and talked to everyone. They buried the empty coffin and i went to the wake. everyone kept talking, but they ignored me now. I got a gun out of my funeral dress and shot them, then tried to kill myself but couldn't. The room then locked and I was trapped with all these dead people. The dead people got up and ripped me apart, but i could still see them eating my remains.