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A teen reference to the show Jersey Shore, usually airing new episodes on Thursdays. Thus making a combination of the words Jersey and Thursday to make Jersday.
Dude, you ready for a great Jersday?
Yeah man, Snooki's getting crazier every week!!!!!
Jersday by peaceboy April 21, 2011
Related Words
Avery: It's Jersday! New Jersey Shore!!!!

Ryan: Do you drive a Harley? cuz you're faggot
Jersday by PedoBears March 22, 2011
Term used to show that the TV show "Jersey Shore" is going to be on television that day.(Mainly used on Thursday)
EX:
Normal Person:Dude guess what today is?!

Gay fag who hates jersey shore:Thursday?

Normal Person:No Jersday!

Gay fag who hates jersey shore:awww to bad im dumb and hate that show :/

Normal Person: Yep too bad
Jersday by TheDevastaterr February 27, 2011

Thirsty Jersday 

Thursday night gettin drunk while watching JERSEY SHORE.
"Hey Bitch, what are you doing tonight?"
"Not much, either doin' Miguel or getting drunk for "Thirsty Jersday"
Thirsty Jersday by yeechopnette February 23, 2011

thirsty jersday 

a combination of thirsty thursday and jersday. when you and your friends get drunk and watch jersey shore together.
Yo grab some nattys bro it's thirsty jersday!
thirsty jersday by cramexxx February 22, 2011
Happy Jewsday, man!
Jewsday by Wubwubwubweeb April 20, 2019
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
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