Characters
I can't remember what fun is for.
— James ‧ James and the Giant Peach
Behind the line May contain spoilers.
Our reading
An editorial interpretation.
The speaker treats fun as something whose purpose has become hard to recall. That creates an odd distance from an activity usually pursued for its own enjoyment. The line can sound weary or wistful, questioning a familiar source of pleasure as though it needs a reason to exist.
Context reviewed