A combination of yikes, yuck and the f-word. An exclamation of intense astonishment. Followed by two exclamation points.
by metssox April 27, 2007
Get the yiffesmug. A word used by furries which actually means "yell and sniff", but furries use it as a verb which means "having sex".
by Awooooooooooooooooos December 28, 2018
Get the Yiffmug. 
by i need a therapist July 29, 2022
Get the yiff memug. “Yiff in Hell” is a phrase used by those that oppose the furry fandom, directly aimed towards furries as a message to take the activities commonly associated with yiffing elsewhere
On 4chan, “Yiff in Hell” is typically found in Furry threads, used as a protest towards furries in an attempt to lower the amount of furry content posted on the site. While it has been seen spammed throughout threads in great numbers, certain self-identified furries have offered rebuttals stating that the argument doesn’t make sense
This is the proper meaning, rather then the "Other ones" trying to insult the Furry Fandom
On 4chan, “Yiff in Hell” is typically found in Furry threads, used as a protest towards furries in an attempt to lower the amount of furry content posted on the site. While it has been seen spammed throughout threads in great numbers, certain self-identified furries have offered rebuttals stating that the argument doesn’t make sense
This is the proper meaning, rather then the "Other ones" trying to insult the Furry Fandom
by Another Goddamn Furry June 6, 2015
Get the Yiff in hellmug. by ZooCrew62 November 8, 2020
Get the Dr. Yiffmug. by Lupis Lupine July 25, 2003
Get the Yiff Juicemug.