Short for Finger Free February, it’s a challenge where a woman is tested of her will power to not masturbate or have sex for a whole month. You are allowed to get turned on, watch porn and suck dick .As long as you don’t yeet your finger up your vagina or do wtf you do with your clitoris

Commonly used in text messages or social media as a short form for Very Sound Advice.

fuck fake friends

fff- follow for follow. Used mainly on Instagram accounts, when people ask for a follow for follow.

Flat Foreign Females (Internet slang, chat)

An Abbreviation used by U.S. teens/young people to refer to a non-U.S. woman or girl who has a small breast size and who behaves in a submissive, envious and adoring way when she meets U.S. women/girls with a more feminine body shape and a larger breast size than her own. This quite a rude internet slang Abbreviation is commonly used by Caucasian U.S. teens

forbidden-fruit factor
This is the thing that makes any one of your girlfriend/boyfriend's good friends and best friends 10x more attractive than they've ever been before because of the fact that you can never have them.
This makes people you'd normally not be attracted to seem even hot at times.