Movies
Kid, you must be confusing me with David Selznick. I don't make major motion pictures, I make crap.
— George · Ed Wood

Behind the line May contain spoilers.
Our reading
An editorial interpretation.
The speaker rejects a comparison with David Selznick by drawing a blunt distinction between major motion pictures and crap. There is no attempt to dress up the second category. The humour comes from the abrupt collapse of professional grandeur into a candid, almost defiant description of poor work.
Context reviewed