Movies
I'll find those stairs. I'll whip their butt, too. Those stairs won't know which way they're going.
— Donkey · Shrek

Behind the line May contain spoilers.
Our reading
An editorial interpretation.
A comically blustery threat against a flight of stairs, as though steps were an enemy that could be beaten up. The joke lies in treating architecture like an opponent, with the confident claim that the stairs will end up confused about direction.
Context reviewed