Movies
If you were happy every day of your life, you wouldn't be a human being, you'd be a game show host.
— Veronica • Heathers

Behind the line May contain spoilers.
Our reading
An editorial interpretation.
The speaker challenges the idea of uninterrupted happiness by comparing it with a game show host's cheerful public manner. The joke treats everyday changes in mood as part of being human, while turning constant delight into something that sounds like a professional performance.
Context reviewed