Characters
Laugh it up, fuzzball.
— Han · Star Wars: Episode V - The Empire Strikes Back
Behind the line May contain spoilers.
Our reading
An editorial interpretation.
A sour comeback aimed at someone who is laughing. Telling them to laugh it up grants permission while signalling irritation, and fuzzball adds a teasing insult, so the line sounds exasperated and a little petty rather than truly furious.
Context reviewed