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Acronym for 'Fuck It & Sleep In'

You know, the days when you wake up feeling overwhelmed: You have a headache. You've hardly slept because the neighbors were fighting/having sex/getting raided by the cops, you awoke early to the sound of barking dogs and vomiting drunks walking home from the club, You forgot to change your alarm clock for daylight savings and it went off an hour early, at breakfast time there's no toast because the bread is mouldy, no cereal because the milk has turned, no porridge because the rat in the cupboard ate it, and no chance of a McMuffin because you've lost your wallet. You hate your boss, the new departmental manager has been on your back for weeks, the customers are giving you the irrits, you suffer from anxiety from having to deal with the people in Human Resources, and it all just gets a little bit too much....

FINSI!
WTF !!

I CBA to go to work.

Bugger it all, I'm having a FINSI day !
FINSI by KeithMyArthe September 4, 2011
When a girl is in love with another man's penis, until the point where it becomes so obvious and disgusting, for she does it in public. A peener feiner tags along his friends, nagging and teasing them. The peener feiner is usually not liked back.
Guy 1: why the hell is Janice following us around?
Guy 2: probably because she's peen feining Sam
peen fein by bb514 February 23, 2011
Fenson is the leader of a cult currently known as "The Fenpossy" that roams the earth during the Fenaissance Era. His followers include fensonson, fensonsonson, fencousin, fenfosterson and more. Fenson is also the strongest entity in the world, stronger than Thanos. Fenson is an intellectual, a tech geek, the most sexiest man alive.
Rob: Fenson! My man, where you at bro?
Fenson: I was hanging out with mark and leo?
Rob: MILAD! *claps* ITS OVER!!!
Fenson: Webster is bullying me again!
Fenson by fensemble November 13, 2019
Feinboy... one of the most sacred words to ever exist on the whole entire planet. Every time you say it, it brings you more happiness and fortune to your future. It can be used in many ways. It is also one of the biggest insults EVER. But at the same time it's one of the nicest things to you call someone. You can alter the way in is used towards someone depicted your tone. And to show ultimate happiness you can sing the feinboy song. But if you sing the feinboy song you can't say feinboy again for the rest of the week or the power will become too much and something horrible will happen 6 days after if you use feinboy again in a sentence before the week is over.
"I HATE YOU ... YOUR A FEINBOY"- Melvin

"WOW WE ARE NOT FREINDS ANYMORE HOW DARE YOU CALL ME A FEINBOY!"

"Hey bro... I really love you... your a feinboy to me man god bless-bethel
"wow broski thank you so much, I love you man your a feinboy too-muhammed

"feinboy taken away from the riptide i'm gonna be your left hand feinboy"- Fynn
"OH MY GOD, he's singing the feinboy song, he must be filled with joy!"-Drew Pep
Feinboy by Drew Peeep! March 4, 2019

Finsexual 

A Person who is attracted to other people who are Feminine In Nature or (FIN), usually used by Non-Binaries but Binary People can use it too.
I like that girl, I like that trans girl, and I might like that twink guy. Because I am finsexual.
Finsexual by Bob Tistabalm November 17, 2020
An Irish political and cultural society founded about 1905 to promote political and economic independence from England, unification of Ireland, and a renewal of Irish culture. It now constitutes the political branch of the Irish Republican Army.
Sinn Fein was founded by Arthur Griffith in 1905. Its current president is Gerry Adams.

Slogan: "Building an Ireland of Equals"
Ideology: Left-wing nationalism
Sinn Fein by Dancing with Fire September 3, 2012