What does FF stand for?

What does FF mean?

FF	Formula Feeding Medical » Physiology
FF	Fortissimo Miscellaneous » Unclassified
Ff	Fortsetzung folgt International » German
FF	Forum Feedback Internet » Chat
FF	Forward Facing Miscellaneous » Unclassified
FF	Forward flexion Medical » Physiology
FF	Foster Father Miscellaneous » Unclassified
FF	Founding Fellows Community
FF	Fragmentation Functions Miscellaneous » Unclassified
FF	Free Fall Miscellaneous » Unclassified
FF	Free Flight Governmental » NASA
FF	Free Fluid Miscellaneous » Unclassified
FF	Free Form Miscellaneous » Unclassified
FF	Free Format Miscellaneous » Unclassified
FF	Freeboard Forward Governmental » Military
FF	Freedom Fighters Miscellaneous » Unclassified
FF	Freiwillige Feuerwehr Miscellaneous » Unclassified
FF	French F Miscellaneous » Unclassified
FF	French Franc Regional » Currencies
FF	frequent flyer Business » General
FF	Frequently Flustered Miscellaneous » Unclassified
FF	Fresh Fruit Miscellaneous » Unclassified
FF	Friendly Fire Governmental » Military
FF	Frigate (Frigate, Frigate) Miscellaneous » Ship Types
FF	Frighteningly Foolish Miscellaneous » Unclassified