Characters
I'm nothing if not redundant! I also repeat myself.
— Richard • Ally McBeal

Behind the line May contain spoilers.
Our reading
An editorial interpretation.
The speaker boasts of being nothing if not redundant, then immediately proves it by saying they repeat themselves. The joke is the self-demonstrating loop: the second sentence echoes the first, turning a confession of wordiness into a deliberate piece of comic repetition.
Context reviewed