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An expression that can be added to almost any adjective to give emphasis. It generally means, "Extremely" or "To the utmost degree." This expression is very flexible (you might say it's flexible as fuck?), as you can use it to modify essentially any description, good, bad or other.

Opinions are divided as to what the word 'Fuck' means in this context:

One one hand, you could easily argue that it is referring to the act of 'Fucking.' IE "This thing was thingy as fuck," meaning that the thing was so thingy that it resembled fucking. This was probably where this phrase originated.

However, as mentioned above, the phrase can also be used alongside negative descriptions as well as positive ones. IE "That shit was painful as fuck!" Given this, it's safe to assume that the word fuck, in this context, has no meaning at all, and is likely just used for emphasis, as it is a curse word.

The phrase can be used by anyone, but is limited in reach by it containing the word 'fuck.' The phrase is also somewhat vacuous, and more-or-less accomplishes the same thing as an exclamation point. Due to its loud and vapid nature, it has become very popular in the Bro community.
-This is legit as fuck! (probably the most common usage)
-My hand-writing is girly as fuck
-This sandwich is dank as fuck
-I am writing this UD post because I'm bored as fuck
-Dis club is tight as fuck

Atypical but still appropriate uses:
Programmer: "This algorithm is optimized as fuck!"
Doctor: "That patient's sick as fuck!"
Hipster: "This restaurant is main-stream as fuck!"
Words you can keep
A phrase inserted after any adjective to make it stronger.
I'm drunk as fuck.
I'm horny as fuck.
I'm tired as fuck.
I'm blazed as fuck.
I'm screwed as fuck.
A phrase used to express the intensity of something.
Dude!! My piss is clear as fuck.

That chick is hot as fuck!af
as fuck by ENEM D September 23, 2015
Dude that test was as hard as fuck
Yeah man, it was savage as fuck
As Fuck by Michael6543210 January 7, 2016
A common usage of measurement. Used when the object being described is as big as the deal your parents used to make when you said the word "fuck".
That shit was big as fuck.

Man, that joint we smoked got me high as fuck.
As Fuck by Mic McGafty September 7, 2017
phrase used to describe how intence a situation is
(can be added to any adjective to stress the severity)
Dude thats noisy "as fuck"
thats dumb "as fuck"
white "as fuck"
delicious "as fuck"
as fuck by canteberry June 30, 2010
Universal unit of measurement. This is used to add measurement to anything that requires an exaggeration of its natural state to its current state.
Man, That girls booty is sexy as fuck.
as fuck by ZlatanAgrees November 18, 2016
More from Urban Dictionary

age gate 

An absolutely foolproof way to keep minors from viewing content deemed "too mature" for them to watch.
Billy: "So I was trying to watch some videos for an M rated game, and I ran into an age gate, so I put in my real birthday. SOMEHOW it managed to figure out that I am 12. CURSE YOU AGE GATE!!!"

Bill: "Fucking age gate! *quick scroll* THERE! I was born on January 1, 1904. Fuck you age gate."
age gate by Banja January 7, 2011
Word of the Day on August 27, 2026

board chow 

A)
The Crud that collects under the keys in a keyboard. Usually more severe in the keyboards of programmers and webmasters as they tend to spend a lot of time at the the computer and thus eat at their desk. Mainly affecting IBM Model M (clicly) style boards.

B)
Can also be used to gross out Non-Techie people
A)
Bill: want to go to the club?
Bob: No, I've got to clean out my board chow, keys are starting to stick.

B)
Bill: Want to go out to get a bite?
Bob: No, i am just going to have some of my board chow/
Bill: Whats' that?
Bob: The food scraps that collect in my keyboard; Want some?
Bill: *GAG* *HURL* *GAG*
board chow by BinaryHackerMan September 3, 2007
Word of the Day on August 26, 2026

young pup 

a young person, a young adult in their late teens/early 20s.
Ah, you're just a young pup at 23!
young pup by the dog May 30, 2006
Word of the Day on August 25, 2026
West Midlands slang word for rockers, bikers, greasers etc. In the late 1980s it was used by the UK music press to refer to a specific scene centered around the bands Pop Will Eat Itself and Crazyhead. The term never found favour with readers of 'the inkies' (Sounds, Melody Maker and the still extant NME) and was soon dropped. Now often used in predominantly working-class areas of the midlands and the north to mean someone who listens to rock-derived music and/or dresses in a manner that suggests they affiliate themselves with rock music of some kind.
Some grebo passed with Sabbath playing on his stereo.
The Poppies are at no. 17? God, a grebo band in the charts!
They're playing nu-metal now, bloody grebos!
grebo by cactuscat September 15, 2006
Word of the Day on August 24, 2026

TikTok Farlands

TikTok Farlands is a term to refer to videos that you see after scrolling for a long time. These videos can potentially be disturbing, or weird. Said videos can also have low likes, or low comments.
“I reached the TikTok Farlands bro”
Word of the Day on August 23, 2026

mormon assault vehicle

another term for a station wagon, mini-van, or any other kind of vehicle that is targeted at the "family" demographic(also M.A.V.)
"Tactical advantages aside, the M.A.V. is top of the line for the holy warrior troop transport manufactured by the Church of Latter Day Saints Military Industrial Complex. Also great for family trips...to heathen lands."
mormon assault vehicle by KVRX January 10, 2005
Word of the Day on August 22, 2026

Shakira Law 

A version of "Sharia Law" that Reform Ltd supporters tend to refer to, often by mistake.
Richard Tice of Reform now lives in Dubai, under Shakira Law, although telling Brits that we should worry about it
Shakira Law by Reformltd February 16, 2025
Word of the Day on August 21, 2026
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