1.Young, Incredibly, Fuckable, Furries
2. A form of internet porn not unlike hentai that involves anthros (bipedal, walkin talkin animals, with human actions, facial expressions, and traits)that is usualy hand drawn
3. The noise a fox makes when mating
4. A very thouroughly slandered fandom throughout the internet by biased self religous try hards
1. Dude, i fapped so hard to that YIFF you sent me.
2. Dude, i couldn't sleep last night, my foxes wouldn't stop yiffing.
by Drake527 November 09, 2011
a form of pornography of the furry nature
in which one or more anthropomorphic
animal character(s) is doing something
sexually to another anthropomorphic animal
furry. there are sites such as furaffinity.net
and yiffstar.com where there is a large
selection of yiff(y) stories and pics done
profesionally and amature arts.
(furry 1)wanna yiff?

(furry 2) depends on if you are good at rp

(furry 1) im good if you want me to be *winks*

(furry 2) then lets fuck
by blood wolf May 28, 2009
an addictive drug derived from coca or prepared synthetically, used as an illegal stimulant and sometimes medicinally as a local anesthetic. Otherwise known as cocaine.
Yo man, I gotta get off that yiff. The habit is costing me a fortune.
by pimpmaster1234 November 10, 2010
What male virgins define as the orgasm they achieve after masturbating to pictures of dog porn on the internet.
"I had the best yiff ever last night, but now my laptop is stuck shut."
by HolyToiletWater July 16, 2012
(in the furry fandon)
to fornicate. (from the sound a fox in heat makes)
interjection (a greeting such as hello)
see also yiffy
verb "I yiffed her."
interjection "Yiff, Dark Fox."
by Colin Ritter August 06, 2003
verb: to have netsex while pretending to be animals or furries (anthropomorphic animals), frequently practised in the furry fandom

noun: 1. a session of said netsex, 2. pornography featuring furries

adjective (yiffy): sexy or horny, in a furry context
"Hi, I'm an anthro white-tailed deer with a 12 inch cock, wanna yiff?"

"Doug Winger? He's that guy who draws nothing but yiff, isn't he?"

"U look yiffy, I want U be naughty on me"
by El Gatito Demoniaco December 21, 2002
Internet intercourse between two or more furries.
We yiff with other "animals" online because we can't mate with our own species in real life.
by TG March 27, 2004
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