1. Horny Mother Fucker.
2. a name given to those that cannot keep it in their pants.
3. one that is extremely enthusiastic about anything and everything related to sex and/or sexual pleasure.
"Who is that girl? She's been getting dirty on the dancefloor all night."

"Oh, thats just KCoop, shes such an HMF."
by number1hmf November 23, 2009
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a strange thinking noise tht kids type when they have nothing else to say.
Like a sigh or gasp.
Instead Cool kids use HMF
by Raeeee(: December 23, 2008
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Hit Man Family
a gang created under a group of crips in 1995 under abz and efcc members in long beach california

expanded to oregon and washington
hyt man family 3814 "hmf"
by youngwidow June 15, 2010
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dude:your dad is a hmf
other dude: wtf
by Jaydenc September 30, 2006
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Similar to commonly used abbreviations "HML" (Hate My Life)
This is an abbreviation of the expression "Hate My Foreskin", becoming widely used as a way of expressing one's disappointment, or feeling down in general.
Blaming one's foreskin is a lot harder to confuse for someone turning emo than the more popular HML
Guy 1 "Dude, I'm so failing my education, there's nothing i can do about it now, HMF"
Guy 2 "Same man, HMF too"
by FreeEarl April 25, 2011
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a hot mother f****r. if not paired with another person, are usually sitting and playing video games all day, and is in a constant hunt for food. they're very passionate for what their interests are, they use much emphasis when telling stories, and rarely have boring moments. their hair is amazing and they are very seductive in their ways. they have the most beautiful eyes one will ever see. an hmf is always making perverted jokes, and the one listening is unmistakeably always laughing. commonly, an amazing person that one is very lucky to ever meet, and there is only one in eternity.
i'm in love with an hmf.
by i.o.l.v.m. June 18, 2009
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