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.
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.