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Hoosier Sebastianism 

A belief in the imminent return of Bob Knight to Indiana University; soon to be followed by a National Championship.
Through this overly long Dark Night of the Basketball Soul, Heather was consoled by her Hoosier Sebastianism belief: soon Bob Knight would return; soon the Big Ten forces of evil would be vexed; soon the Red and White would triumph!
Hoosier Sebastianism by Duckbutt December 28, 2003

sebastianstansexual

Someone who is attractive to Sebastian Stan and/or the characters he plays
Emma: I’m Sebastianstansexual

Spencer: me too!
sebastianstansexual by Marvelsimp January 3, 2021

sebastianic 

adj. describing that which is most refined, magnificent, and appealing. Often refers to an ideal that many strive to achieve, but likely never will. An unparalleled perfection.
Girl: Mom, I met the most amazing person. He's a drop-dead gorgeous rocket scientist with a beautiful soul and a great sense of humor. He just might be absolutely perfect.

Mom: There's no such thing as perfect. There's got to be a catch.

Girl: Hmm, but what if he were born with Sebastianic traits?

Mom: If so, you'd be the luckiest girl alive!
sebastianic by mmGT April 24, 2011

Sebastianstansexual

Being attracted to Sebastian Stan, and Sebastian Stan only, because you have no real life or social contact.
Me: “I’m coming out as Sebastianstansexual.”
Friend I don’t have: “Oh so you’re a Stan stan mode: extreme?”
Me: “Yes.”

(I’m not funny, I know)

Sebastians

Street term for crabs

aka Sebastian was the crab in The Little Mermaid.
Bitch yo mama gave me Sebastians.
Sebastians by JB & VC March 26, 2009

sebastiansaeps 

She's one of the best people on tik tok. She makes AMAZING edits and she's my wifey. i love her so much and i will always support her!! her wife is bazvoid aka marina
sebastiansaeps i love you so much
sebastiansaeps by Marina Barnes February 9, 2022
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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