"Maurice and Robert skewered the carcass."
Dead Pig
GNU Free Documentation LicenseDead Pig - Credit: Anatoliy

When you skewer the carcass of an animal like a pig, you run the split through it and out its mouth. The pig needs to be supported for its full length, or else it may fall apart when it gets tender. If you want to spread the pig flat, you will have to split the backbone of the rib cage from the body cavity side.