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The Unbendable Arm 

The unbendable arm is when you put your right arm on someone else's shoulder and without flexing, have someone push down on your arm. If done correctly, your arm won't bend...

If you happen to be brave and have a tough arm, then you can have someone hang from it, and do pull-ups if they're up for it
Yo Julie, come hang on Brandon's Unbendable Arm!

The Unbendable Arm is trippy yo!

Let's try The Unbendable Arm Tonight at my party!
The Unbendable Arm by Bitsy-Boo October 15, 2010

the unbearable lightness of genius 

the unbearable lightness of genius is an affliction that affects only one person in the entire population of earth and this person is a guy named Seán (who is also affected by the unbearable lightness of awesomeness too but that's for another day)
when Seán woke that morning he was suddenly overcome by the unbearable lightness of genius...he knew that Wordle didn't stand a chance that day. unrelated... he also looked super hot.

untenable 

1 Something that someone tells you and they can't prove it.

2 Unable to substantiate with solid evidence.

3 unprovable
Example 1

Teacher: Give me your homework.

Student: Here's my homework; (pretends to hand it over) I wrote it on magic paper that only wizards can see and touch.

Teacher: That excuse is untenable. You still get a zero and detention.

Example 2

Person A: I'm telling you; Jesus really exists in the communion wafers of the Eucharist. Transubstantiation is irrefutable because sacred scripture and church doctrine supports it.

Person B: No, That's not irrefutable, that claim is untenable! The church has no palpable proof themselves, only St. Thomas Aquinas's word games. All that faith in your head has mushed the brain out of your ears.

Person A: Heathen! You know in your heart that God is real and that he loves you!

Person B: That's also untenable. But I'm not saying that I can prove you to be wrong.
untenable by Elvidse December 18, 2009

Undeniable

When something just absolutely not be denied from obtaining a success
Thomas Jefferson High School for Science and Technology is undeniable
Undeniable by anotherasianguy2013 October 29, 2011

unbengable 

From 绷不住了, bēng bù zhùle, literally "unable to stretch anymore". Means to be pent up and unable to hold back (such as in sexual urges, laughter, or anger). Basically means, "I can't help it".
That girl is so hot I am unbengable
unbengable by fat debu November 1, 2021

Unbreedable 

Adj. a person who is not sexually attractive
Your mom so unbreedable the only way she got you is by stealing sperm from homeless people
Unbreedable by fapngood August 29, 2021
More from Urban Dictionary

square grouper

Nickname given to bales of marijuana thrown overboard or out of airplanes. Origin is reportedly from members of the US Coast Guard in the area of Southern Florida.
"Base we've got some square groupers floating outside of Miami harbor."
square grouper by slipsheet November 6, 2004
Word of the Day on October 7, 2026
A girl who does ballet and only talks about ballet. Her schedule is filled with dance classes which does not allow her to do any other activity.
"Hey, do you know that girl Sally?"

"Yeah, she's kind of annoying. All she ever talks about it ballet."

"Wow, what a Bunhead."

"Hey Sally, you want to hang out this weekend?"
"I can't, I have dance."
"You're such a Bunhead."

"Yeah... I know."
Bunhead by Jen00 October 24, 2014
Word of the Day on October 6, 2026

trucker's tan 

A sunburn or suntan focused on the left arm. It is caused by the left side of the body being the only half that gets exposed to sunlight while driving. Presumably, it would be located on the right side of the body in countries where they drive on the left side of the road.
I had a trucker's tan after driving for 10 straight hours on a sunny day.
Word of the Day on October 5, 2026
The phenomenon where adults salivate at children's toys
Every time I walk into the toy aisle, I catch myself kidulting over the latest action figures and LEGO sets!
kidulting by Emotional Cruiser October 12, 2025
Word of the Day on October 4, 2026
British slang for a scientist or technical expert, esp . when the speaker is not certain of the expert’s specific field of study. Not necessarily derogatory, but typically used by persons without a technical background. In the US, the equivalent would be “egghead”, “squint”, or “geek.”

Origin of the word is unknown. Started sometime in World War 2. Given the typical evolution of British slang, could easily have started because what these experts did was confusing or “baffling” to the common person.
According to the boffins downstairs, the murderer used a serrated blade.
Boffin by Agnon February 11, 2023
Word of the Day on October 3, 2026

Pee Calculus

When you have to pee in a movie but don’t want to miss anything, and must do the following mental equation: will the amount I have to pee cause enough discomfort to diminish my attention capacity for the remainder of the movie to an extent which is greater than the amount of the movie I would miss by making a mad dash to the restroom.
I saw Satantango last night, wonderful film but by the 5th hour I had to start doing pee calculus.
Pee Calculus by anorlondo October 1, 2026
Word of the Day on October 2, 2026
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