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1.
someone who loves to eat there muffins backwards..lol
niffum oh my god look at him eat it
by destiny November 07, 2004
 
2.
That thing that you find in your closet after leaving a glass of milk in there for eight years. But it could also be the expression on a gay mans face when a naked woman jumps on his head, or how you find blue lint in your naval after you wore a white shirt for three days.
Ouch my niffum is bleeding.

You ate my niffum right off of my plate!!!

The wild niffums are loose.
by usinthelittlehouse March 07, 2006