TV
She was so anally retentive she couldn't sit down for fear of sucking up the furniture.
— Patsy · Absolutely Fabulous

Behind the line May contain spoilers.
Our reading
An editorial interpretation.
The line turns a description of excessive control into an impossible bodily force. Its imagined consequence, sucking up furniture by sitting down, treats the phrase literally and pushes it into absurdity. The result is an exaggerated insult built around the collision of psychological and physical language.
Context reviewed