Characters
Humor. It is a difficult concept.
— Saavik · Star Trek II: The Wrath of Khan

Behind the line May contain spoilers.
Our reading
An editorial interpretation.
The speaker names humour and immediately calls it difficult, approaching it as something to be understood. That measured, analytical wording can itself sound funny beside a subject associated with spontaneous laughter. The line leaves open whether the difficulty lies in recognising humour, explaining it or sharing it.
Context reviewed