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The Free Software Foundation (FSF), established in 1985, is dedicated to promoting computer users' rights to use, study, copy, modify, and redistribute computer programs. The FSF promotes the development and use of free software, particularly the GNU operating system, used widely in its GNU/Linux variant.
FSF has seven people on its board of directors.
by strate March 14, 2007
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"Fuck Shit Fuck!" IMspeak acronym expressing intense rage or frustration.
<b>jescahhh</b> has left the room

HereizKegg: FSF!!!! Not again.
schlikywiky6669: jessica needs a new fucking computer.
by 2sick January 03, 2005
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Abbreviation for "for straight for shizzie" AKA "for straight for shizzle."

This is commonly used as a fancy way to say 'hell yea' or 'no doubt.' Basically, acknowledging a comment while also adding a sense of excitement or anticipation.

kid1--> what we doin' tonight?
kid2--> We gonna go to the party tonight, get crunk, and nail us some hotties.
kid1--> fsfs

by gjbell1 September 10, 2007
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4
An Internet shortening of "for sure for sure" spoken "fa sho fa sho"
Daquan texted me if he could borrow my #3 H pencil lead to which I replied, "fsfs"
by Skankin_Pickle May 02, 2015
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