The abreviation for compact flash.
CF is used in cameras.
by Al "The Computer Guy" April 17, 2004
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Acronym for Cruelty-Free. CF products do not test on animals that have been imprisoned in tiny cages and sentenced to a lifetime of chemical abuse. Anything vegan must be CF, although not all CF products are vegan.
Person 1: "OMG I love my new CF foundation!"
Person 2: "Oh it's cruelty-free? That's pretty awesome that you'd go out of your way to find such products."
Person 1: "Of course! I'm vegan so it would be immoral for me to buy something that exploited animal suffering. :)"
Person 2: "I totally admire your dedicated compassion."
by Luunn October 4, 2016
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Chem Fun / Chem Sex = Sex on drugs
'I'm defo (not) into CF' ~ I'm defo (not) into having sex while being high
by \msb\ February 28, 2017
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Not too sure. Apparently it’s an insult, but if you ask the person what it means, they refuse to tell you, laugh, and mock you. Or maybe it’s supposed to mean, the absence of meaning. In other words, when you’re too dumb to make a comeback, you just call somebody a cf because you don’t care you’re a dipshit. You strive to be stupid. Dumb-fuckery was your elective in middle school, and you flunked out of that class just to prove to all your other retarded-as-shit friends that you were the biggest fucking king dodo bird of them all.

I’ll go with that.
Me: what’s your deal, man?

King Dodo: u’s a cf like frfr >;’D~
by rock_roll_ride January 23, 2018
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Colored Folk Syndrome - Named for eating a meal and feeling tired immediately after
Man, I just ate two Thanksgiving dinners and am now suffering from CFS.
by BrownfromDowntown October 25, 2009
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it can mean either

1. close friends (on instagram stories)
or
2. can’t front, meaning you can’t lie
1. “who wants to be in my cfs, swipe up
2. “cf she gonna regret this”
by istoleqwertyuiop March 21, 2023
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cyber fuck just ritin more stuff so not 2 short
jerk: hey sexy wanna cf me?
girl: screw off u asshole
jerk: ur a whore
by mehahahahaha March 3, 2006
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