A widely used internet acronym which stands for, "You're a Fucking Faggot."
Friend: It looks like a beautiful day to fly kites!
You: ...YAFF
by AD__MVP March 7, 2010
Get the YAFF mug.
An acronym that stands for "You're a fucking faggot".
"Hey, did you watch the Ice Dancing team today? I think Canada's gonna win gold."
"...Dude, YAFF."
by DDJ's BFF March 7, 2010
Get the YAFF mug.
"Why are there so many half full beers in my apartment"

"I dunno, some guy yaffe'd all of them"
by Mr.. G October 19, 2013
Get the yaffe mug.
Degenerate form of the word yiff, used to denote a form of roleplaying sexual encounters. While yiff is used to denote general cybersex, Yaff is used to denote more freakish and/or pathetic attempts at textfucking, including bizarre and horrifying fetishes, poor grammar and spelling, and a total lack of attempt to formulate a coherent scene or storyline with the other participant(s).
Oh my god, I was chatting with this guy I met last night and he just wanted to yaff.

How bad?

Total disaster, it looked like a typewriter exploded while writing a horrible fetish porn novel.
by ferin August 14, 2009
Get the Yaff mug.
Is that a Baby Ruth in the pool? No, its a yaffe.
by billyboyhorton October 23, 2014
Get the yaffe mug.
To masturbate/wank/spanking the monkey.

Started life as as the word "Jaff" but evolved into "Yaff" after some Spanish influence.
(1)
Z: Where have the tissues gone?
J: Melvin took them into his room to yaff.

(2)
Z: What's Melvin doing?
J: He's yaffing.
by Jimmy the knife October 31, 2004
Get the Yaff mug.