What does FF stand for?

What does FF mean?

FF	Firefox Computing » Software
FF	Final Fantasy Miscellaneous » Science Fiction
FF	Fan Fiction Community » Media
FF	Fast Food Miscellaneous » Food
FF	Fantasy Football Community » Sports
FF	Final Fight Community » Sports
FF	Fast Forward Community » Media
FF	Fat Free Miscellaneous » Food
FF	Forum Feedback Internet » Chat
FF	Family Friendly Community » Film Censorship
FF	Freiwillige Feuerwehr Miscellaneous » Unclassified
FF	Friendly Fire Governmental » Military
FF	File Format Miscellaneous » Unclassified
FF	French Franc Regional » Currencies
FF	Form Feed Computing » General
FF	Fully Fashioned Miscellaneous » Clothes
FF	Force Five Miscellaneous » Unclassified
FF	Fuel Flow Governmental » Transportation
Ff	Fortsetzung folgt International » German
FF	Fission Fragments Academic & Science » Physics
FF	Free Form Miscellaneous » Unclassified
FF	Finished Floor Academic & Science » Architecture
FF	Fast Find Computing » General
FF	Fully Functional Miscellaneous » Unclassified
FF	Fianna Fail Miscellaneous » Unclassified