Used to express astonishment when somebody says or does something completely out of character. The only possible explanation is that they've been replaced by an alien shape-shifter who looks exactly like them, but acts differently.

The phrase is a parody of the cliché found in old movies, when somebody returns home to find their lover gone and a stranger in their place.

Shanee: "I'm going to stay in tonight and study."
Ruthie: "Who are you, and what have you done with Shanee?"

Who are you, and what have you done with by Yogi Bhajan February 26, 2011

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Are you gonna go A.D., or are you sticking with B.C.?

A question that asks if a society or group is going to join the modern era (A.D.) with technology and advanced ethics or if they are going to live in the Bronze Dark Ages (B.C.) with immoral values such as stoning people to death. A choice between embracing the modern world fully rather than keeping one hand on advanced technology while being barbaric with the other hand. The choice to advance all aspects of a society rather than just the military. Modernization of only some aspects of a society doesn't mix with keeping backwards with the rest, as it just doesn't work.

"It comes down to this Iran, you have a choice to make. do you want the world to be comfortable with you having nuclear weapons or are you going to keep stoning people? Are you gonna go A.D., or are you sticking with B.C.? Cause you're not allowed to be that modern and that primitive at the same time! You have to choose, they don't work together. It's the reason you never see anyone riding a Segway with Fred Flintstone Wheels."- Jon Stewart, The Daily Show, 8th September 2010.

Are you gonna go A.D., or are you sticking with B.C.? by pwvl September 15, 2010

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Are you down with me?

Are you down for sex?

Him: "Come over. Are you down with me?"
Her: "Of course. I'll be there in 5"

Are you down with me? by Karina Saralina April 19, 2007

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what are you DOING with your life?

Means the same thing as:
What is WRONG with you?
Are you STUPID?
Are you HIGH?

Basically used if you don't understand how someone could ask a really stupid question.
Or if they will not leave you alone.

Girl 1: The sun goes around the Earth, right?

Girl 2: OhmiGAWD what are you DOING with your life?

Boy: keeps taking girl's phone while she's working

Girl: "Fucking knock it off!"

Boy: puts phone back on table, waits a few seconds & looks away, then takes phone again

Girl: Wrestles with boy for her phone "Oh my effing god, what are you DOING with your life?!"

what are you DOING with your life? by JakartaTaco June 17, 2011

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are you being intimate with someone?

Are you having sex with someone?

Girl -may I ask you a question? Guy -Sup? Girl-Are you being intimate with someone? Guy- No I am not.

are you being intimate with someone? by Babynewbelove April 23, 2018

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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.

trucker's tan by population361 May 30, 2006

Word of the Day on October 5, 2026

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kidulting

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

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Boffin

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

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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

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Dutty

Literally "dirty" pronounced with a West Indian accent. Can also have a positive connotation, for example Sean Paul's album title "Dutty Rock".

"The girl is pretty but she corrupt and dutty!"

or, in a positive usage:

"Booya! That freestyle was dutty!"

Dutty by J Hall April 3, 2003

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Ajumma

korean word for madam, older woman

Ajumma wait a moment

Ajumma by aintnotinbutnice July 5, 2009

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Slop Grenade

When someone uses AI to generate a large document, slide deck, or piece of code/software and tosses it over the fence for you to deal with.

Chad: Hey Brent I sent you the new backend API change to review, it’s only 100 files changed.

Brent: he just tossed me a slop grenade

Slop Grenade by Joe Squid September 28, 2026

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