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Nick and Jeff Warbler's (from Glee) fandom-made couple name.
Person on livestream: Do you ship Niff?
Nick: ...*huge smile*
by GeeUrie February 10, 2012
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2
I'm just a stupid niff!" "I will niff you." "Get the niff outta hurr." "Niff you n-n-niff you!" "Written in the niffs!" "Niffy niffs!" "Stroke a niff." "Rollin like a big niff.." "MLIN" (MY LIFE IS NIFF
by Nifferologist! May 30, 2011
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3
boolean inverse of the function iff, equivalent to xor
same as nand or nor
0 niff 0 =0
1 niff 0 =1
0 niff 1 =1
1 niff 1 =0
by geek_1024 April 30, 2012
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4
Niff is a street name for poppers.
also used for sniffs,
pass me the niff mate

ive only had 3 niffs
by agatha chris June 15, 2009
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5
an abbreviation for niffler. its derived from the creature in harry potter which sniffs out gold, but it simply means "nothing" or "nevermind." see niffler
Dude 1: what's that your hiding under your bed, d3wd?
Dude 2: niff.
Dude 1: ok, if your sure.
Dude 2: just forget it, man.
by forearm October 17, 2005
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6
A shortened version of the word "Niggerfaggot"
omfg, you are such a niff

See also pineapple
by littlepancake April 24, 2010
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7
An English 50 pence piece. Hand in hand with biff
Mr D's sell large chips for a biff niff
by Will Satterthwaite May 30, 2005
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