Characters
This is a ...sort of...corpse...in an open, oaken, oblong coffin...with a silk lining....It's a dead body, Pats.
— Edina · Absolutely Fabulous

Behind the line May contain spoilers.
Our reading
An editorial interpretation.
The description circles around a corpse with pauses and elaborate details about its coffin, then lands on the plain phrase dead body. The change in vocabulary makes the ending bluntly comic. Neither the polished wood nor the silk lining alters what is being described.
Context reviewed