FSFIL

Future Step Father In-Law

Yeah, he’s my FSFIL

by Confused redditor April 21, 2020

Ffilf

Fat fuck i'd like to fuck

Look at that FFILF!

by Do one! March 14, 2018

fafillion

An extremely large number that is ultimately totally arbitrary in nature.

"I have a million fafillion dollars."

by ME!!! May 13, 2005

fwfil

Faggots Who Fell In Love

It can mean literally two gay people who fell in love. It can also be used if you're making fun of your friend and their significant other.

sally: "I seriously hate gay people who are getting married. Like its seriously disgusting."

chris: "I believe the appropriate term is fwfil."

by qwertyuiop';lkjhgfdsazxcvbnm,. September 15, 2010

FSIL

an abbreviation for Future-sister-in-law.

Jenn and I are FSILs for life, becuase I am marrying Nick Jonas and she is marrying Joe Jonas.

by Me =) April 10, 2008

Fofillion

A number lager than infinity by i place value. when infinity finally ends (never) Fofillion will be right after by one zero.An egzageration term created by my friends and myself.

"Damn! That must of taken a Fofillion years!!!"

"You already owe me like.... a Fofillion dollars!!!"

by Soto301 October 11, 2007

Fufilliation

When having to fufill something in need.

“ Going to the movies was a fufilliation she had in mind . “

by 317leighhh July 1, 2018