Anakin: Apparently not.
A moment when a normally competent character suddenly becomes incompetent — knowingly or otherwise — which fuels an episode, a plot line, or any number of smaller threads.
Coined by Hank Azaria on Herman's Head: Azaria would ask the writing staff, "Who's carrying the idiot ball this week?" This is generally not a compliment. Frequently, the person carrying the idiot ball is acting Out of Character, misunderstanding something that could be cleared up by asking a single reasonable question, or not performing a simple action that would solve everything. It's almost as if the character holding the ball is being willfully stupid or obtuse (or impulsive) far beyond what has been established as "natural" for them. Frequently, it's only because the story (and by extension, the writers) need them to act this way, or else the chosen plot/conflict for the episode won't happen.
On one hand, when done poorly, at best, this provokes a "What an Idiot!" response from the audience and at worst, this can completely shatter their Willing Suspension of Disbelief, especially if the way the person is holding the idiot ball is either too contrived or incongruous with their established characterization. For example, people can accept that the holder of the idiot ball is asking the dumb questions to allow a certain amount of exposition to occur, something that wouldn't naturally be talked about but needs to be stated for the audience, but they won’t accept it when a team of top-tier, no-nonsense scientists or seasoned adventurers with Nerves of Steel that can take on any situations suddenly starts panicking and acting like utter imbeciles for the sake of the plot.
On the other hand, Tropes Are Tools — making stupid mistakes can be the hallmark of Character Development if the person recognizes it in the end. Seeing someone discarding the idiot ball can be a rewarding moment when they are Taught by Experience. Likewise, Idiot Balls can also deflect a boring Invincible Hero, which is positive for an audience reaction, it's also worth noting that an idiot ball can be in the hands of someone whose personality would likely have them holding it (the hotheaded type shooting their mouth off at a crucial moment when silence and discretion were necessary, for example).
Basically, the audience can forgive (if not accept) this trope so long as its usage feels justified in-universe (i.e. when the person holding the idiot ball has a logical and probable reason to have it). It only gains a negative connotation when its usage is for, ultimately, no adequate reason other than “If the characters weren’t stupid, there wouldn’t be a story.”
This trope can be seen as Truth in Television, as everyone makes stupid mistakes every once in a while, frequently without meaning to and/or knowing it.
Temporary (or permanent) Genre Blindness is often a cause of this trope. When multiple characters in the story have to grab the Idiot Ball to keep the plot going, you have an Idiot Plot. If everyone is holding the Idiot Ball all the time, you may have a World of Dumbass.
Compare with Ping Pong Naïveté where a character goes back and forth between grabbing and not grabbing a particular Idiot Ball, Forgot About His Powers where a character advances the plot by not doing something expected rather than doing something unexpected, Lethally Stupid if a character remains alive but their actions are disastrous and put others at risk, or Too Dumb to Live where an Idiot Ball kills them (or at least almost kills them).
See also Hanlon's Razor. For the opposite, see Smart Ball. Peruse the Ball Index for similar forms of Out Of Character Moments.
Note that this trope only applies if the person is acting incompetent beyond what we have normally seen of them. If they are continuously that dumb, they're more likely The Ditz or The Fool. Similarly, generally doesn't count if the holder is Driven to Madness or under a Heroic BSoD. Fear-Induced Idiocy and Love Makes You Dumb are subtropes.
Now if you excuse me, I'll be spending my vacation in Chernobyl while all of you tropers look at the many examples of this trope.
Subtropes include:
- Alcohol-Induced Idiocy
- Crowning the Criminal
- Cutscene Incompetence
- Deer in the Headlights
- Distress Ball
- Exhaustion-Induced Idiocy
- Forgot About His Powers
- Fury-Fueled Foolishness
- Greed Makes You Dumb
- Hatred Makes You Dumb
- Hero Ball
- Just Eat Gilligan
- Love Makes You Dumb
- Lust Makes You Dumb
- Phlebotinum-Induced Stupidity
- Poor Communication Kills (when used improperly)
- Serious Business
- Stupidity Is the Only Option
- Thinks of Something Smart, Says Something Stupid
- Third Act Stupidity
- The Troublemaker
- Villain Ball
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