JJTrue's definitions
Yiffing is a combination of words "sniff" and "yell" made up by MatPat's wife Steph in their livesteam for a game Dayshift at Freddy's, as she didn't know what it actually meant.
MatPat: "So, yiffing is, for those who don't know-"
Steph: "Wait, I should guess! I think that a yiff is probably a yell and a sniff at the same time."
Steph: "Wait, I should guess! I think that a yiff is probably a yell and a sniff at the same time."
by JJTrue October 30, 2016
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