Top Definition
The word Hmmf is generally used within friendships when a particular friend is in a bad mood, or in a 'hmmf' with the other.
Susan was in a hmmf because her friend Carol was spending all her time with her boyfriend.

Carol: Susan, are you in a hmmf with me?
Susan: No
Carol: Are you sure?
Susan: YES! I AM SURE OK!??!
Carol: Your deffinatly in a hmmf.
by HmmfCreator May 26, 2009

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