Well, I thought it stood for "no further message"--something to add to the subject line to an email, when the subject line is the email, to save the recipient the nuisance of opening the, um, message. If it does not mean this, it should.
And the mule you road in on, NFM
by Buce July 29, 2005
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Not For Me.
The new girl at work that flirts with all your colleagues inc all the married and in relationship ones "She's gotta go. NFM".

When someone you know hasn't washed their hands and they dig their finger into your Carmex "NFM".

Those people who introduce themselves as "mad" "crazy" funny" or "edgy" THEY are "NFM".

People who say "nice to e-meet you"- "NFM".
by GemAlice August 30, 2016
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Short for Nigga Fax Machine. A mode of communicating by writing a note and having a friend deliver it to the person.
Guy 1: My phone is broken, can you be my nfm and let Amy know I'm gone on Thursday?
Guy 2: Sure thing man, I'll tell her tomorrow.
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I just bought this laptop off Ebay. It's opened but NFM.
by illestfob February 29, 2008
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"nice flat midriff"; used only for girls
Dude, I wish I had that girl's body, shes got such an nfm!
by Mallorey April 21, 2005
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Nicest Fucking Mum
The mum who swears, eats chocolate in the bathroom so she doesn’t have to share, pours a drink 2pm any day of the week because her kids are driving her mental, says ‘No’, admits when she’s having a shitter of a time and isn’t ashamed of it. Doesn’t pussy foot around the fact that parenting is fucking hard work. At times, considers running away and never returning. Throws up the NFM Club sign at the mall.
NFM “My kids have been a nightmare today, I just need a drink”

FRIEND “It’s only 2pm and it’s Tuesday”

NFM “Fucking irrelevant. Get me a glass pronto, these kids are doing my head in
by Gettinitdun January 17, 2020
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