TV
My dad thinks every person in the world is having more fun than him. Which could be true.
— Angela ‧ My So-Called Life

Behind the line May contain spoilers.
Our reading
An editorial interpretation.
The speaker reports a father's belief that everyone else is having more fun, then allows that he might be right. That brief concession turns a description of habitual comparison into a joke at his expense. The uncertainty gives the final remark its dry edge.
Context reviewed