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Fish day 

(ofishal fish day) is on the 24 september, where everyone must where something to do with a fish, bonus points for something really big like fish shoes or a costume, or something really small like a really detailed big fish drawing on the forehead. This was made to celebrate the day of the fish and make fun of the all lives matter campaign due to the sea turtles.
Collette: Did you know that fish day is on your birthday? It ruined it!
Sophia: I know, it made it 10x better!
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telescope fish day 

March 8th is the official day to celebrate the glory that is the deep sea telescope fish.
“Hey Jim, did you know that tomorrow is telescope fish day?”

“What it is?! I’m SO EXCITED!”
telescope fish day by Grungymuddy February 7, 2021

National Filet o’ Fish Day

April 15th is when you protect and attack peoples asscheeks
I’m excited for National Filet o’ Fish Day

Dead fish day 

On the 23 on October we will celebrate the lives of the dead fish known as dead fish day we will protest to get dead fish there rights !
Dead fish day by anonymous October 22, 2020

dead fish day 

On October 23 we will celebrate the lives of the dead fish! We will protest to get them there rights bc DEAD FISH HAVE RIGHTS!! 🎣
dead fish day by anonymous October 22, 2020

Selffish fish day 

The day the girls can be as selffish as they want. No-one can say anything to them, because they simply do not care.
Today I have a selffish fish day, so I´m going to say home from school because I have a nail-appointment.

national slander fish day

National Slander Fish Day. The day people hate on fish because fish smells like crap. National Slander Fish Day is on April 4, 2023.
Friend: yo bro, todays april 4.
Me: yeah bro i know
Friend: you know what that means
Me: what?
Friend: its national slander fish day bro!!
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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