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

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

teen common sense

This is what adults use when they think they are supposedly smart.

I'm giving a word an extra prefix because why the fuck not? It'll make me sound smarter.

"I hate teens who use teen common sense, unlike normal common sense."

by Coalizee September 18, 2019

Dating Common Sense Deficiency

The inability to detect a Red flag or multiple if applicable.

person 1 (the victim): Its just that her "crazy to hot scale" is really good, bro!
person 2 (a good friend): I'm pretty sure you have a form of dating common sense deficiency.

by takentacos November 16, 2019

Dutch common sense

A misplaced arrogance that you can handle any crisis, just because you're good at building dikes.

Translates to "Hollandse nuchterheid."

"Good thing we Dutch have the Dutch common sense, or else we'd have to learn from other countries' experiences!"

by Morty297 October 14, 2020

Dutch common sense

Thinking you can handle any crisis, just because you're good at building dikes.

Translates to "Hollandse nuchterheid."

"Jan, don't worry, just use your Dutch common sense instead of a face-mask."

by Morty297 October 14, 2020

Use common sense

A way more polite way to say: "hey dumbass, read the fuck up." but of course those be some no-no words. So the former, more professional way is used.

Pete kindly, as much as possible, told Joel to use common sense, instead of unkindly saying: "holy fucking christ, read a book, you moron."

by MartianSupremacist August 7, 2024