Characters
Who cares about Derek Zoolander anyway? The man has only one look for Christ’s sake! Blue Steel? Ferrari? Le Tigra? They’re the same face! Doesn’t anybody notice this? I feel like I’m taking crazy pills!
— Mugatu

Behind the line May contain spoilers.
Our reading
An editorial interpretation.
Mugatu rants that Derek Zoolander has only one look, listing Blue Steel, Ferrari and Le Tigra as the same face. He's indignant that nobody notices, capping it with the "crazy pills" line. The humour is the pompous fury over a very silly fashion complaint.
Context reviewed