Rat Coffin 

A meat pie or sausage roll with low quality meat.

I can’t wait to wrap my laughing gear around a couple of rat coffins this arvo.

Rat Coffin by Mazzy213 January 11, 2022

Rat Coffin 

An Australian or New Zealand meat pie, which is a baked pastry casing filled with meat and topped with a puff pastry lid. The meat contained within is alleged to be beef mince, beef chunks or chicken, but often rumoured to be mystery meat and quite likely to be the cuts of cow/chicken that you wouldn't feed your pets.

I'm really hungry, I think I'll have a rat coffin with some dead horse

Rat Coffin by Captain Roundhead May 14, 2018

rat's coffin 

a meat pie containing suspect ingredients

I'll have a rat's coffin with sauce thanks

rat's coffin by Ian-Oz September 14, 2006