Re: The most mediocre episode?
Meh is probably a good word, though I'm from a generation before it came into general use, so don't fully understand the meaning. But that sounds close. An episode so forgettable, it made no impression on you at all.
Moe: I'll take the blonde!
Larry: I'll take the brunette!
Curly: I'll take the Black and Tan!
--Wee Wee Monsieur (1938)