Ruined FOREVER (Darth Wiki)
1984: The Transformers launches in the US, in toy, comic and cartoon formats, forever ruining Transformers.
God, No! A moment that you don't like has happened in your favorite fictional series! A new character appeared out of nowhere! Or your favorite character got the Idiot Ball that week! Or there is a Musical Episode not written by Joss Whedon!
The shark has been jumped over! Your show is now Ruined FOREVER!!!
What? Ruined forever?! Get a hold of yourself, man!!!
Sure, it might have been a dumb moment, but how do you truly know until the series has run its course? What if the new character turns out to not be The Scrappy, as you feared? What if your favorite character is never handed the Idiot Ball again? What if the plot for that Non Sequitur Episode was Just for Fun, and the rest of the series sticks to what it does best?
The show isn't made by gods (despite what some may assume). People make mistakes. Shows can have low points but still have high quality throughout the run.
Just take a few deep breaths. You may think you have seen a clear Jumping the Shark, but those are rare moments. Take the actual Jumping The Shark from Happy Days. That moment was clear for at least three reasons:
- It was completely against the premise of the show, which was a loving homage to the last generation.
- Fonzie was no longer the Breakout Character who was a role model to some; now he had mutated into a full-fledged Canon Sue.
- It was identified upon retrospect 20 years later, meaning it had the benefit of hindsight and it wasn't a knee-jerk reaction.
How could the show fix that without ignoring the episode completely? There are plenty of other ways to jump the shark, but those are rare diamonds of crap... in the rough of crap. It's near impossible to tell when a show has jumped the shark until after the fact. The variety of the votes on Jump The Shark are a testament to that. Worse, if people are just rushing to declare jumping the shark for any moment they don't like, it comes across as Complaining About Shows You Don't Like.
Even worse than that, there are folks who feel the series is Tainted by the Preview - the show doesn't even have to be released for someone to declare it Ruined FOREVER. The same goes if the show has only been on for a couple of episodes before people start making dramatic statements of this nature; if the show's just started, that usually means that the producers are still seeing what works and what doesn't, so any reasonable viewer might have to allow for at least a few stumbles.
And there comes a point (especially with adaptations) that fans believe the current storyline or incarnation will somehow retroactively destroy the "purity" of the earlier work. Authors should not listen to these types of fans.
So if you don't like a moment, don't like it. But shows have survived worse.
This trope is named for the "Ruined FOREVER" page at the Transformers Wiki. Note the helpful included list of "things that have RUINED TRANSFORMERS FOREVER in the past." 
Frequently a side-effect of They Changed It, Now It Sucks. Also known as Schrödinger's Shark, as its status as a shark jump can be very subjective.
If the fans are screaming "Ruined Forever!!!" and then are blindsided by a development no one can complain about, then you have And the Fandom Rejoiced.
Keep in mind that this here is an Audience Reaction Trope, folks, and some of these series may have actually Jumped the Shark. The point of this trope is noting how suddenly and over-dramatically this call will be made and the lack of actual shark-jumping the object of the viewer's complaint actually has. And for that matter, DO NOT list examples where you think it has genuinely stopped being good.
No real life examples, please; Real Life is not scripted.
- Anime and Manga
- Comic Books
- Live-Action TV
- Professional Wrestling
- Real Life
- Tabletop Games
- Video Games
- Web Comics
- Web Original
- Western Animation
What, somebody put a stinger on this page?! All The Tropes is officially RUINED FOREVER!!!
- ↑ As a note, they list every franchise including half of G1.