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An individual whose gender is unclear to everyone else.
I'm not sure if that person is a she or a him, therefore they must be a shim.
Shim by Coli Oli March 22, 2010
1. a thin slip or wedge of metal, wood, etc., for driving into crevices, as between machine parts to compensate for wear, or beneath bedplates, large stones, etc., to level them.

2. A not-nice word for an androgynous looking person. See also: shemale.

3. A seattle based rock band.
1. You just loosen the mounting bolts and slip the shim between the axle and brake backing plate.

2. Wow, you know, I was about to call the person over there a shim, when I remembered that would be fucking mean of me.

3. The shim are my third favourite band.
shim by Coopface December 3, 2006
a he-she, she-male, transvestite
whooah look at that shim! its more manly than that one!
shim by kaitlin barnes November 30, 2004
A mixture of the words him and she. Used to describe someone who has characteristics of both a male and female person.
"His wife is such a shim!"
Shim by Corinne Simpson October 15, 2006
(n)-A person of anonymous or unconfirmed gender. Usually only applicable to people met online.
Are you still going out with that shim?
shim by Jon Zamboni August 3, 2005
Commonly used word for small penis originating in northern Texas.

A person with a small dick.
Person A: "My dick is 1.5 inches hard."
Person B: "You're such a shim."

Person A: "What's the difference between a mosquito and a shim?"
Person B: "You can feel a mosquito when it's in you."
Shim by Chris.Plum.Sen.Nim August 12, 2009
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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