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Jeffervescence 

"Jeffervescence" is the quality that someone named Jeff possesses when he is overflowing with enthusiasm, sparkling with charisma, beaming with light, exuding joy. The term was coined by Suzanne Whang (former host of HGTV's #1 show, "House Hunters") and was inspired by watching Jeff Vezain perform on stage with Gary Sinise's Lt. Dan Band.
As soon as he made his entrance on stage, grabbed the microphone and started singing, the audience was delighted and transfixed by his Jeffervescence.
Jeffervescence by SneezyDwarf August 4, 2016

jefferine 

An noun representing a respected human being found in urban to suburban environments known for spending more hours studying at home than the hours spend in school, hanging out, and sleeping combined. Typically, a jefferine would be dissatisfied with a 99% because he or she believes that the amount of time put into studying should correspond to a 100%.
A: Why does John always rush home right after school?
B: Haven't you heard? He's a jefferine; according to my arithmetic, 7 hours of school and 5 hours of sleeping amount to 12 hours, so he has to spend the remaining 12 hours studying.
jefferine by mrexotic September 5, 2012

Mike Jeffries 

A discriminating old guy that is the CEO of Abercrombie and Fitch that only wants attractive people to wear his clothes even though he looks hideous.
Mike Jeffries: "I only want attractive people in my stores".

Person: "Then you better get out of your store".
Mike Jeffries by KX12 May 19, 2014

Jeffries Jinx 

When Gary makes a sporting bet with Dan, no matter what team/result Gary will lose resulting in loss of funds
Dan”yep I’ll take that result off you Gary ..the Jeffries jinx will strike again...I’m a shoe in..you should have some respect
Jeffries Jinx by Mr Gibbles January 15, 2019

Jeffried 

A term used to describe when your good friend sleeps with your girlfriend. Usually when it is not known to you.
I got jeffried last night when i was out of town for a wedding, cant believe he slept with my girlfriend.
Jeffried by ButtonUp October 9, 2020

james jefferey 

A duck faced wanker that has aids and herpes.
That guy is such a james jefferey
james jefferey by Rooooolls June 27, 2016
More from Urban Dictionary
anyone who succeeds in disgracing/over indulging themselves in the throws of clubland
28 hours and 4 clubs later, gurning for england but still refusing to go home - a total wrongun!!
wrongun by bevvers March 21, 2007
Word of the Day on October 8, 2026

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
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