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Dumbest Common Denominator

The most logically-challenged portion of the general population for which the most obvious warnings, posts, signs and instructions must be written or designed to avoid catastrophe.
On the lid of the coffee cup: Contents may be hot.
On a package of kitchen knives: Caution! Items are sharp.
On a trash bag: Do not place over head.
At a railroad crossing: No parking.
On a clothes dryer: Do not place children or animals inside.

"This is the dumbest sign I've ever seen. Do they think I'm a complete moron?"

"Dude. Gotta plan for the Dumbest Common Denominator."
by Upallnightagain September 25, 2011
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dimblebum

When cussing/swearing isnt appropriate and you're dealing with an idiot, well not just an idiot.... the idiot.
God this customer is such a dimblebum.

Pure annoyance at the world.... Dimblebums...Dimblebums everywhere
by Chewster February 23, 2017
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Dumbling-down

Doubling-down on a dumb, stupid, idiotic comment.

Literally anything said by President Trump, to which he and/or his deplorable sycophants follows with an even more dumb comment.
First, Trump calls a bunch of countries shithole, then tried to deny it and now his followers are saying it's "bar-room talk". These morons are just dumbling-down on his vileness & racism.
by JSJoyce January 12, 2018
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dumbly

Yo Dylan, isn't he so dumbly
by yourstruelyme April 15, 2020
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dumbest place on earth

A: I just read that youtube comment and felt like my IQ dropped by like 10 points.
B: Youtube comments section is literally the dumbest place on earth. I'd suggest you read pornhub comments instead.
...
A: Thanks man, that was really helpful advice.
by rjlovesu June 23, 2020
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Dumber than a rock on a bad day

Dumber than a rock on a bad day, which would be dumber on the dumb scale compared to "Dumber than a rock".
Friend 1: Your dumber than a rock!
Friend 2: Your dumber than a rock on a bad day!
Friend 1: Shit.
by jeffboi42 August 20, 2020
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dumblo

Someone who talks fast as they attack someone's intelligence
Amaya was being such a dumblo in the call last night.
by SheriffEm November 9, 2020
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