The TVTropes Trope Finder is where you can come to ask questions like "Do we have this one?" and "What's the trope about...?" Trying to rediscover a long lost show or other medium but need a little help? Head to Media Finder and try your luck there. Want to propose a new trope? You should be over at You Know, That Thing Where.
We don't have this, several attempts to make this have been tried, and on my word as a moderator this is never getting made. It's ultimately a complaint magnet not protected by the Grandfather Clause like other Scrappy tropes.
If you're willing to dial the question back to it being an episode that some people hate, there is Creator Backlash for if the author, cast, and/or crew hate the episode.
And Fanon Discontinuity if the fans pretend that it never happened.
When all else fails, there's Dethroning Moment of Suck.
Current Project: Incorruptible Pure Pureness
Could be Never Live It Down.
Wasn't Dethroning Moment of Suck taken down a decade ago because it was just a list of fan complaints?
^^ Never Live It Down is about fandom character flanderization.
^ No, you're thinking of Wallbangers.
Current Project: Incorruptible Pure Pureness
An episode of a show almost everyone hates.