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The "period" of time wherein a woman's period, which normally happens monthly, happens only once in a year. This is usually the result of certain Period-controlling medications that can extend the time between periods to from between 3 months to 11 months.

The Yeariod will typically be a violent cataclysm of rage and decay, lasting a week and may be thought to contribute to global warming due to the heightened Btu output in yeariodites.
"Im on this new birth control pill and it makes my period come like only every twelve months, augh!

I feel like I'm about to get my yeariod!"
Yeariod by Karlsefni February 22, 2011
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The yearly celebration of when a girl first started menstruating; a period anniversary.
My yeariod is January 5th.
yeariod by KoisoraRECYCLE April 11, 2009
Related Words
That time of the year when you get all grumpy and naggy; the yearly equivalent of a period.
Chris: Pass me that pen already, HURRY THE FUCK UP!

Mike: Listen Chris, you gotta calm down.

Chris: Alright alright, I'm just having my yeriod, sorry.

Mike: It's ok man we all go through that every year, I feel ya bro.
Yeriod by SnappleJuice March 14, 2011

Yearious 

Conversation where one is serious and hilarious at the same time.
"Don't be so yearious"

"I spoke on the phone with Jari, he was so yearious!"
Yearious by Bananapealer August 7, 2012

YearMoDa 

Proper file naming formatting for filenames of all sorts of media you hope to store on your computer or phone. When you use yearmoda formatting all your files will be organized forever sortable by date. The YearMoDa specification requires an 8 digit number then an underscore, then whatever you want to call the file. The important part is the 8 digit prefix that always starts with a 4 digit year, then the two-digit month, and two-digit day, Hence YearMoDa.
20210301_bigthumbs.jpg - this is how you do it!
Yearmoda so phat... you couldn't lose a file if went bonehead tomorrow.
hey babe, you wanna drop all our files into one drive and just yearmoda.
YearMoDa by YearMoDa evangelist March 1, 2021
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
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