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
Get a yaf mug for your cat Georges.
Telling someone that they are a faggot.
It is popular to use on the internet but some say it face to face. An example would be calling your friend a YAF for example....
WOW Max YAF
by yoyme December 01, 2010
Get a YAF mug for your guy Zora.
A migrant farm worker who is less than 5'2" tall.
Go down to Four Mile Run and pick up some yafs - we've got harvesting to do.
by toasterhead January 04, 2004
Get a yaf mug for your daughter-in-law Julia.

v. Yaffed (rhymes with laughed) use in place of fucked. Describes the general screwing up of something.
The word originates from the last name of an MIT professor who continually yaffes things up

n. yaffer: like a jack in the box, but is hideous and has two different ears. also can mean asshole
You are such a yaffer!

I yaffed it up

"Whoa, whoa, whoa, what am I looking at?"
"A yaffer"

go yaffe yourself
by yaffe lab July 06, 2006
Get a Yaffed it up mug for your coworker Vivek.