1 definition by Icerook

Top Definition
while dressed up in animal costumes, participants grope, fondle, and hump on each other for sexual gratification. no actual sex involved. Usually done in a group setting.
Peter "rabbit" and Jane "cat" fondled each other through their costumes while yiffing at a furry friends party.
by Icerook January 21, 2004

Mug icon
Buy a yiffing mug!