Characters
You can't just walk out of a drive-in.
— Danny • Grease
Behind the line May contain spoilers.
Our reading
An editorial interpretation.
The speaker objects to walking out of a place defined by driving in. The wording puts the ordinary expression for leaving against the literal form of arrival, making the departure sound awkward or contradictory. It turns a simple exit into a problem through the name of the venue itself.
Context reviewed