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1.
I = I
W = Will
N = Not
F = Forget
Y = You

Track 5 of The Bunny The Bear's self-titled album.
boy: i have to leave now...
girl: :'(
boy: *leaves note later - iwnfy <3*
girl: <3 :)
by Chester612 October 10, 2011
 
2.
I = I
W = Will
N = Never
F = Forget
Y = You

Track 5 of The Bunny The Bear's self-titled album.
boy: i have to leave now...
girl: okay :'(
boy: *leaves note later - iwnfy <3*
girl: <3 :)
by Chester612 October 10, 2011
 
3.
Acronym for "I would never fuck you". Similar yet very different in meaning to "we don't love these hoes".
Hideous girl: Buy me a drink ;)

Your bro: IWNFY!
by ssrp August 09, 2013