It's the abbreviation for a webcomic called Freedom Fries. It stands for, "Freedom Fries".
by Mirosui Onitsaki June 1, 2005
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fortissimo! magicians use this to entice young boys.
Pavarotti likes ff a lot. He has a big belly.
by i_done_no_poo_here April 6, 2004
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use by adult "entertainers" like escorts for male to female transgender hosts, usually preceeded by a number representing lengh of penis ex: 8 ff or FF - 8" fully functional
by staroflife February 24, 2009
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An acronym for "For fuck's sake", meaning "I can't believe this shit, I demand you to stop"

The source is For Christ's sake ("in Christ's name please explain/stop that"). Swap in Fuck All ("nothing") for the deity, and you get an urban, angry, non-religious, expletive, demanding equivalent of "Oh My God, do something".
1. For fuck's sake, where did you get that godawful haircut?
2. FFS, I've explained it to you five times already. Now STFU!
by HJJBrig January 14, 2014
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What would a gay man be with out his fabulous FF?
by LADYDTK October 22, 2010
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Stocking fetishist abbreviation for old-fashioned stockings from the 40's and 50's that are knitted flat and sewn together leaving a distinctive back seam. Authentic full fashioned stockings also have a top welt made by doubling the fabric over and sewn with a small hole in the back seam called a "finishing hole".

Look, it matters to you if it matters.
"Hi, baby, are you wearing your FF stockings and your CFM pumps? I'll be right over for a little soft-core CBT..."
by Axel von Auersperg August 24, 2005
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