Skip to main content
-as a quick question (demo x?)

1. just like saying "are you serious?" or "really?" or "for real?" when used by itself as a question

-noun

2. an alternative to "demonstrated existence", "proof", "evidence", etc.

-interjection

3. (used to indicate strong agreement, assent, etc. or to simply state "yes, that is accurate information" aka "for real" or "affirmative"):

"William's mom has big ol' titties."
"Demo X she's got big ol' tittums!" (everyone save William laughs)

"Doesn't Nathan Vasher lay out Carlos Francis when they run that fake punt play in this game?"
"DEMO X!!!"

see also: hells yeah, hell yes, damn straight, F*CK YES!

-verb

4. to demonstrate existence of
5. to prove

for example:

"Can you demo x the Heisman you won, Mr. Young?"

"Can you demo x you won the Heisman, Mr. Young?"

Mr. Young: "No. I don't have one. Y'all demo x'd the Heisman is a bunch of bull after you passed on me. That's like giving MJ's Finals MVPs to Tony Kukoc!"

-interjection #2

6. demo x = "chill out"; demo = "chill", x = "out"

OR

demo x = "simmer down"; demo = "simmer", x = "down"

OR

"calm down", etc., etc.

***This definition is the only one that is not obviously intuitive. Demo x is a popular way of saying "chill out" to someone when that person is becoming too excited or nervous or agitated about something because since prior existence has been demonstrated regarding the subject at hand, the person doesn't need to get all worked up over it. It's been done. It's old news. Now move on.
Scene takes place in a large, crowded elevator. Gregory is crammed right up against Robert. The pair is in the middle of the crowded elevator.

Gregory (near whisper): "Elizabeth's cheating on me."

Robert (whisper): "What?"

Gregory (louder, more enunciated whisper): "Elizabeth's cheating on me."

Robert: "Demo X? Do you have any demo x?"

Gregory (markedly louder): "Demo X, Bobby! She demo x'd her infidelity when I walked in on her blowing Christopher at Christen's Christmas party for Chrissakes! DO I NEED ANYMORE DEMO X THAN THAT?!?! DO I??"

Robert (controlled, authoritative whisper): "Demo x, Greg! Demo the f*ck x, brah."
demo x by chrissimmssucks April 14, 2009
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.
A gaming clan established in 2019, which thrives on the Xbox gaming console. The group plans to entertain an audience with gameplay of video games such as Fortnite, Tom Clancy’s Rainbow Six Siege, Call of Duty, and other various games.
Dude, did you see the last stream from that member in DeMo x?
Nah man, what’d they do?
Bro, they were cranking harder than my mom cranked the belt the other day.
DeMo x by Blobbleguy January 5, 2021
Related Words
More from Urban Dictionary

fauxstalgia 

Faux nostalgia. Faking old things in an attempt to recapture the feeling of times gone past, especially of technology that has passed.
Hipstamatic pictures, just like the vinyl-static added to digital recordings, is prime fauxstalgia
fauxstalgia by scotte61 December 16, 2010
Word of the Day on October 15, 2026

pajama casual 

Pajama casual is a term used when working from home and preparing for a video conference. All business above the waist and your pajama pants down below.
We have a Zoom meeting in a few minutes and I’ll probably go pajama casual.
pajama casual by jrod-knows March 31, 2020
Word of the Day on October 14, 2026

funflation 

The recent boom in consumer spending on entertainment and experiences with a high demand running up the cost of enjoying of those experiences.
I’m trying to go to this Taylor Swift concert but the funflation has made it so impossible for me to afford tickets.
funflation by Dfree523 November 17, 2023
Word of the Day on October 13, 2026
A US deep south term for an alligator. Usually used in the Cajun dialect.
Take the big pirogue, I saw a huge swamp dog out there earlier.
swamp dog by Crystal Ambrose May 22, 2006
Word of the Day on October 12, 2026

Throat Sweats 

The feeling and build up in your mouth/throat of saliva that sometimes accompanies nausea.
Oh man those burritos gave me the throat sweats, I hope I don’t have food poisoning.
Throat Sweats by TacoFings420 April 23, 2024
Word of the Day on October 11, 2026
Load more