Skip to main content
Urban Dictionary Merch
Your favorite words on things you can wear, drink from, read, or give to a friend.
The Urban Dictionary Store sells gifts you’ll have to explain.
Smoking hot administrative assistant who makes up the thin line between loving your job and quiting.
I wasn't going to come to work today, but with jackstack around, it aint so bad.
jackstack by Beeyo November 1, 2007

jackstall 

Pronounced jack-stal
Verb: To quit or pull out of something because you are rubbish at it.
Noun: Someone who frequently quits things or has recently quit something because they were doing badly.
'i got an E in Latin in the mock exam. I think I might jackstall it.'

'I'm rubbish at Latin, I think I might quit.'
'You're such a jackstall.'

Jackstain 

A stupid person described by a spot or spots of ejaculation.
"Paulie was busted after trying to buy weed from an undercover cop...he is a real jackstain."
Jackstain by Shawna123 September 2, 2005
A large stack of porngraphic magazines that one would use to masturbate to or jack-off to.
My girlfriend found my jackstack and wants me to add some lesbian magazines to it.
jackstack by Dan Brooks December 23, 2007

Jackstand 

When one inserts a bottle of Jack Daniels into ones own rectum and proceeds to complete a handstand.
"I was so intoxicated following my second jackstand."
Jackstand by Bra2011120 January 11, 2012

Bean's Jackstalk 

Bean's Jackstalk is what happened when Jack accidentally bent over in front of the beanstalk and it went way up his ass.
Bean's Jackstalk is something all men fear, like the Ruins, except worse.
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
Load more