Characters
I got pulled over this morning for having all the mirrors in the Mercedes turned so I could see myself.
— Suzanne ‧ Designing Women

Behind the line May contain spoilers.
Our reading
An editorial interpretation.
Suzanne confesses she was stopped for aiming every mirror at her own face. It's vanity played as a traffic offense. Mirrors are meant for watching the road, and she treats checking herself out as the bigger priority, which is the joke.
Context reviewed