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The day after Valentines Day, where you don't spend it with any women and just your bros.
You: Hey you wanna go up town today?
Bro: Fudge yeah, it's bro day!
A day where the boys take a break from all girls to chill and have fun.
"Hey let's have a bro day."
"Sounds good, I need a day with my boys."
a day dicated to hanging out with you bro
Just a couple of pimps no hoes
yo lets have a bro-day tomorrow
bro-day by Craig _Hamilton June 8, 2011

Baddie Baka bro day 

March 1st or any weekend the week before is a Day to celebrate your baddie baka bro’s and all the baddie baka hoes
“OMG ITS BADDIE BAKA BRO DAY
TIME TO GET LAZY AND CRY IN THE CORNER!”

Step bro day

Your step bro becomes your boyfriend for a day
Step brooooo what are you doingggggg

Step bro day
Step bro day by Ally wsg October 15, 2019

National Bro Day

March 10th is National Bro Day because it's the 69th day of the year and is when you celebrate your bro's!
"Happy National Bro Day!"
"Love you bro! No homo tho"
National Bro Day by Httw77 January 17, 2020
More from Urban Dictionary

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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