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An acronym for "You're a Fucking Slut."
Originally derived from "You're a fucking shithead" it has gone through several stages of evolution to reach its classy status. Typically it is used in good fun both on the internet and in real time conversation. You may note how the smooth syllables roll of of the tongue. YAFS can also be used to cause emotional devastation as well. Its dedicated to all those deserving of this title.

1.) "You're a Fucking Slut"
2.) "You're a Fucking Shithead"
3.) go away
4.) hello
5.) Someone who is a fucking slut.
6.) Someone who is a slut in the act of fucking.
1.) You just fucked that hoebag, YAFS!"
2.) YAFS!!! STOP EATING MY STROMBOLLI
3.) Yafs, Charizard is so the best.
4.) Yafs, thats why I fucked you.
5.) Yafs, someone needs to ram a flaming iron spike of acid in your anal cavity you goddamn slut.
6.) You got domed by whats her face, that yafs.
7.) You just got picked up by some yafs... wait thats your mom.
8.) YAFS MOM!!!!!
by Mertz and Flip March 03, 2005
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When someone goes to the gym and spends 90% of the time on their phones scrolling through social media
Looks like its thumb day again for Jimmy with his usual routing... 3 sets of 5 snapchat selfies and 10 sets of scrolling through facebook until exhaustion
by Gary br April 02, 2017
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3
Short for Young Americans for Freedom, YAF is a minuscule college club where stuck up trust fund Babies can suck the cocks of overpriced Conservative speakers for appointments and jobs in DC.
Apparently Charlie Kirk is speaking to the YAF chapter! As if turning point itself wasn’t cringe enough! God do you think more then 5 people will show up? They are dropping a grand on Kirk!
by Enderlee February 13, 2020
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4
"You're a Fuck"- Online Chatting Expression, much like STFU, that denounces a person as stupid, tool-like, idiotic..........basically a fuck. Common substitutions include You're a Fruit, You're a Fool, and other PG-13 language. "Yo" is commonly added to the front of the expression, leading to "Yo You're a Fuck", or YYAF.
Person: Hahah your mother's a whore.
You: YAF you friggin tool.
by browwwnman November 18, 2009
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5
YAFS .....:You ain’t fucking shit.
You said you could handle it but we found out you A YAFS
by BKRB December 16, 2020
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6
Acronym for the saying: You're A Fag
Tommy: Hey you, come lick my balls.
Ralph: GMF, yaf.

*also see GMF for meaning.
by Jarulez April 16, 2005
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