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The Jeffrey Effect 

The feeling you get when you don't know what is wrong about someone but something feels uneasy or uncomfortable; typically associated with people and things that give off a weird vibe.
"Bro, that homeless man over there is giving me the jeffrey effect we should move away."
The Jeffrey Effect by mrsclean September 2, 2019

The Jeffrey 

A drug combination as featured in "Get Him To The Greek" released in 2010. Showed as rolled into a joint. The cornucopia of drugs includes, but not limited to: Marijuana, Opium, Heroin, Peyote, Cocaine, and other unidentifiable substances.
Sergio gave The Jeffrey to Aldous.
The Jeffrey by Phanteh June 10, 2010

The Jeffrey Dahmer Special 

A delicious sandwich consisting of head cheese, salami, ham, and any other meat imaginable

Can also be a pizza with extra meat and sauce
I was starving after a night of drinking and buttsex with my girlfriend, so I ordered two pizzas. A plain cheese for her and The Jeffrey Dahmer Special for me.

Jeffrey the Boiler man

Jeffrey the boiler man:

1) a man who came to fix the boiler during Nerimon (alex day)'s blog on blogtv for Chartjackers

2) a super hero in london

3) the Chartjackers official mascott
CHARTJACKERS!

boilerman : hi i'm here to fix your boiler
nerimon: oh hi
internet awesome peps: WE NEED TO NAME HIM, LETS CALL HIM JEFFREY, JEFFREY THE BOILER MAN
Jeffrey the Boiler man by dobberlydoo November 14, 2009

Jeffrey Dahmer the People Nommer 

A nickname given to the infamous serial killer, Jeffrey Dahmer. You know, the one that ate parts of his victims. The gay one, yeah!
Alrighty Kids, it's time for!
COOKING LESSONS WITH JEFFREY DAHMER THE PEOPLE NOMMER!

the ingredients in a jeffrey 

The ingredients in a "Jeffrey" (from the 2010 movie; "Get Him to the Greek")

--

A "Jeffrey" contains the fallowing ingredients according to "Aldous Snow" a fictional character, and leading role in the 2010 movie "Get Him to the Greek"

--

(Listed in order of the actual line spoken by the character)

--

*Weed mostly. (Marijuana)

*Got a bit of Opium in it. (lachryma papaveris; dried latex obtained from the opium poppy)

*Some Heroin. (diacetylmorphine (INN)), also known as diamorphine (BAN))

*Crunched up E's. (Ecstasy - MDMA)

*Clorox. (cleaning product; primarily bleach)

*Methadone. (Symoron, Dolophine, Amidone, Methadose, Physeptone, Heptadon, Phy)

*Subutex. (Buprenorphine - suboxone)

*Morphine. (MS Contin, MSIR, Avinza, Kadian, Oramorph, Roxanol, Kapanol)

*Peyote. (Lophophora williamsii)

*Some other stuff that's unidentifiable, and I think a little bit of Angel Dust I think if I'm not mistaken. Keep it traditional. (PCP - “Phencyclidine“)
Like a drug Neapolitan.

--

Safety message;

Please note that the above topic, definition, and quote, are all from a fictional character in the 2010 comedy; "Get Him to the Greek". And are not to be taken seriously or attempted in real life.
(the ingredients in a Jeffrey)

Aldous: "Aaron, here, take this, it's a "Jeffrey", it'll calm you down".

Aaron: "What's in this? My heart's starting to beat really fast".
More from Urban Dictionary

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

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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