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
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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 28, 2004
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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 22, 2002
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Term used by furfaggots to denote any form of sex, sexuality or anything of that sort. It usually involves an animal and is about the most fucked up thing on the planet.
Yiff in Hell furfags!
by CheeseAnonymous February 29, 2008
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v.

1.) Furry code word for "violently rape." Usually used in reference to the anal ("tailhole") orifice of a male animal they intend to penetrate with their sad excuse for a penis.
2.) To dress up in a fursuit, find another furry dressed likewise, and hump them while in the fursuit. Sole form of furry sexual gratification not involving the need to "paw off".
1.) "Hey, let's go yiff that sheep!" said GoldenMan323 to his furry friends. Unfortunately, Farmer Bob disagreed with the idea.

2.) Watching furries yiff is like watching a Cheney vs. Rove boxing match. Nobody wins, and everybody who watches it is gonna lose.
by Lenin's Bastard Son September 11, 2004
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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 11, 2010
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To throw up. To feel queasy or sick.
"God, that is making me yiffy."

"I think I'm going to yiff."

"I just yiffed in the sink."
by P. Katto June 3, 2003
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