I use him when I need to talk to someone about boy troubles. He's my SMF.
by Deedz June 26, 2007
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You smf. Whether ur succulent is a matter of opinion. I think the motherfucker part is mutually agreed.
by a1a1a May 28, 2018
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this means single-mode fiber. A single-mode fiber is a single glass fiber strand used to transmit a single mode or ray of light.
OS1 vs OS2 SMF Cables, What Are Their Differences?
OS2 9/125 SMF Duplex fiber jumpers
by FiberforData April 17, 2020
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Usually used as a text abbreviation, (much like "SMD"- "Suck my dick"), SMF means Suck my farts.
"Hey man, you really suck, we can't hang out anymore."
"Whatever, SMF!"
by Archie Star August 20, 2022
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Suck my fuck stuck, a sudden outburst of frustration, also used to let someone know you will not do what they have asked of you. In a humorous situation it can be used to simply say no.
“I broke up with my girlfriend today cause I realized I wasn’t able to forgive her for sleeping with mom.”SMFS!
by JLSE_Ink_79 November 2, 2020
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smf is short for so much fun
i had smf on the trip last time!
by bnnculero November 5, 2020
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John texted Lisa "Are you from Tennessee, cuz you're the only 10 I see"

Lisa texted back "Smf"

John died alone.
by Kane Collins March 24, 2020
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