People
"Life is like a grapefruit. It's sort of orangy-yellow and dimpled on the outside, wet and squidgy in the middle. It's got pips inside, too. Oh, and some people have half a one for breakfast."
— Douglas Adams

Behind the line May contain spoilers.
Our reading
An editorial interpretation.
Life is compared to a grapefruit, and the description stays cheerfully, stubbornly literal. Dimpled skin, a squidgy middle and pips are all carefully listed. The final aside about breakfast deflates any deep meaning, which is the joke.
Context reviewed