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The holiday to eat magic mushrooms. May 20th. Similar to how 3/14 is Steak & BJ day when a man treats his woman good on 2/14 Valentines day.

4/20 is the holiday for weed so 5/20 is the holiday for magic mushrooms!
It's 5/20.. its time to eat some Beautiful Words Magic mushroom bars!
5/20 by BWfunguy April 21, 2022

19-5-20-20-12-5 

The numbers of the letters of the alphabet that spell the word "settle" as in "settle down". By saying this to someone, they will stop doing whatever they are doing to figure out what the numbers mean, thus settling down.
Guy 1: OH MY GOD, YOU'RE SUCH A DICK!!!!!!
Guy 2: 19-5-20-20-12-5
Guy 1: Wait, what? *starts counting*
19-5-20-20-12-5 by veronicalovin October 24, 2009
PM 5:20 is a game on roblox about going through mazes, with dangers and mechanics. This game was inspired by PM 6:06, and many more. It could be considered one of the best PM 6:06 fangames out there.
I love PM 5:20, it is super cool!
PM 5:20 by 520real November 19, 2025

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 

This is how to count to 20. Pretty sure you already know this.
I am going to count to 20. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20.

5,10, and 20 

An adjective used to describe girls under the age of 18
Exact meaning of phrase being; 5 minutes in heaven, 10 minutes in front of the judge and 20 years in prison
Jon: Yo, Bruce look at the ass on her i'd love to hit that
Bruce: Be my guest dude that's a 5,10, and 20 right there, my friend's still locked up for that and i aint gonna keep him company.
5,10, and 20 by ikaneu May 26, 2010

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 

You type this when you have way too much free time or are way too bored.
Teacher: lets count to 50!
Students: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50!
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
Literally "dirty" pronounced with a West Indian accent. Can also have a positive connotation, for example Sean Paul's album title "Dutty Rock".
"The girl is pretty but she corrupt and dutty!"

or, in a positive usage:

"Booya! That freestyle was dutty!"
Dutty by J Hall April 3, 2003
Word of the Day on October 1, 2026
korean word for madam, older woman
Ajumma wait a moment
Ajumma by aintnotinbutnice July 5, 2009
Word of the Day on September 30, 2026
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