A person with the ability to insert thoughts or ideas into another's head that does not cause immediate, but rather long term lingering mental anguish, usually having comedic value.

Walk up to someone. Look at them thoughtfully for a moment. Sing, "I've got a golden ticket." Walk away. BAM, you're a brain ninja.

brain ninja by River City Smokers January 17, 2008

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brain-ninja'd

(verb) to mess with a member of the opposite sex's head, usually by women. Originates from the comedy routine of comedian Dane Cook.

"Peter needed to talk after Maria brain-ninja'd him."

brain-ninja'd by strongbadia7 December 9, 2007

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brain ninja

someone who has the ability to get into your head and fuck with your mind.

Jess: We were having a fight bout (something stupid that was Jess' fault) but i totally turned it around and made him feel bad bout it.
Ashlee: wow, you're such a brain ninja jess!

brain ninja by inimitable07 April 4, 2009

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brain ninja

Title given to girls by comedian Dane Cook. Girls have the power to fuck with a guy's mind by saying something so simple that it eventually drives them crazy.

Girls are brain ninjas! They know how to get in there with their katanas and cut ya! And then disappear into the night!

brain ninja by brainninja14 December 1, 2009

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brain ninja'd

when your in a horrible "relationshit" and you get in a fight one day and the girlfriend happens to say a comment that will seem at first like the worst come back ever but soon will make you so friggin' angry that you go make a ass out of yourself in front of her

yeah steve i completely was fucking brain ninja'd, i walked in and just sounded like a complete dumm shit

brain ninja'd by dickydick May 31, 2007

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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

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Bunhead

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

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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.

trucker's tan by population361 May 30, 2006

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kidulting

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

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Boffin

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

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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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