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Kill your fucking self.
A word used by Bitches to attempt sounding cooler then another person.
-Girl over hears conversation-
Yeah! OMG Justin Beiber is soooooooo cute!

Girl walking by mumbles...Kyfs
by Boss of the Boss September 12, 2010
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2
An abbreviation for 'kiss your face', typically used when texting.
My boyfriend texts me 'KYF' when he misses me.
by katebeckett September 12, 2016
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