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Common sense isn't so common

(phrase / life observation / savage truth)

A brutally honest way to say that just because something seems obvious, most people will still find a way to mess it up. Perfect for moments when humanity disappoints you, usually in public or online.

Used when:

Someone does something completely avoidable or facepalm-worthy.

You realize society collectively skipped the “how to adult” manual.

You want to sound smart while judging idiots.

Meaning: Humans often act in ways that defy logic, and that’s on them.

Synonyms: “Apparently, this is optional,” “Logic is rare,” “Humanity, why?”
Examples of contexts in which common sense isn't so common:

Coworker: “I put metal in the microwave.”
You: “Common sense isn’t so common.”

Friend: “I just walked into traffic because I was texting.”
You: “Common sense isn’t so common.”

Internet comment section: literally anything ever.
by Thejocdoc November 11, 2025
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Commodian

I went to a comedy club for open mic. Unfortunately, most performers were commodians, not funny at all.
by Hifiguy666 November 13, 2025
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Common sense

I instinct knowledge that Dominic Schneider doesn’t have
Dom doesn’t have common sense as he poured the bag of ice and missed the pop machine and went all over the floor
by Max Bellgraph 43 November 19, 2025
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Common Dihnominator

When your dih is bigger than a ruler so you whip it out and the math teacher calls you the Common Dihnominator
Damn Trayvon, you're failing Algebra 1, but you sure are the common dihnominator
by kosagui November 24, 2025
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Commoner’s Fame

The means of achieving fame- not through creative means or personal merits, but through often frivolous and pointless means or gimmicks. Of which, the Commoner with said Fame would practically be nothing without (apart from a vapid insufferable personality trying to cling onto their 15 minutes of fame with a vice grip).
Oh my gosh, have you heard the Hawk Tuah girl’s Talk Tuah Podcast?”

“Lmao nah, she’s high on that Commoner’s Fame”
by aintapuppy December 4, 2025
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common denominader

Da typical circumstance in which you usually find dat da "Unreasonable Man" is either present or significantly involved.
If you wanna know when/where ol' Ralphie will likely step in and try to make a difference, da "three big E's" --- i.e., economy, environment, and education --- are often a common denominader.
by QuacksO December 7, 2025
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Commonwealth triple

When a Lad performs 3 key moves to his girl in one night. The first being the sexual act of sticking a tube up your partners anal hole and pretending to play the bagpipes. Secondly performing sexual relations with a large black goldfish. Lastly producing such a large amount of sperm during oral sex, that it actually drowns the person performing the blowjob.
Oi bois, I did the Commonwealth triple to my bird yesterday. Her funeral is Thursday.
by Sebsass December 15, 2025
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