The 50-50-100 Rule

An even more hyperbolic variant of The 50-50-90 Rule. In a situation where a subject has a 50/50 percent chance of getting something right, they will get it wrong 100% of the time.

This "rule" was popularized within the Super Mario Maker troll level community by popular Twitch streamer CarlSagan42, and is just one example of a reoccurring joke designed to showcase how easy it is to fool the average player into doing something wrong.
Player: *decides to collect a powerup which the level kills them for in the next room* "It's LITERALLY The 50-50-100 Rule. This happens EVERY time!"
by GNFZ April 07, 2021
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The 50-50-90 Rule

Anytime you have a 50-50 chance of getting something right,there's a 90% probability you'll get it wrong.
Person 1: Did you hear about Teddy ?
Person 2: Yeah, he was screwed over by the 50-50-90 rule while trying to argue with his girlfriend.
by Bubble Juice September 10, 2009
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50 Percent Rule

When you’re high on weed and hit the vape and your high goes down 50%
Person 1: “Aw man I hit this fucking geek bar and I’m not even high anymore”

Person 2: “That’s the 50 percent rule
by BirdyFly66 May 25, 2024
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Rule 50

No Akame.
Akame fan: i love akame
Liru fucker: bro you just broke rule 50
by the real liru fucker October 12, 2021
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Rule 50

The rule of the internet (like Rule 34, Rule 63, etc.) which dictates that every fictional work will have a crossover with every other one at some point.
Person 1: Would it be funny if Sparklecare x JToH x Mega Man was a thing?
Person 2: Rule 50, man, rule 50.
by an extremely depressed bandu September 17, 2023
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