FIFO 

Stands for Fit In Or Fuck Off

Fifo bro, just do you and don't be a faker

FIFO by You Hood Dictionaryy March 25, 2020

FIFO 

Fly in, fly out. As in people who fly to their workplace (usually for a week or two at a time), then fly back home. This type of work schedule is common in Australia, especially in mining companies as the mine site is often quite remote.

FIFO workers make good housemates.

FIFO by n3xia August 11, 2012

FIFO 

Abbreviation for "First In, First Out", and abstractly means that the first item placed into a container or list will be the first to be removed. The system is used by fine resturaunts like McDonalds in order to assure freshest average food quality, though it doesn't address the omnipresent "half of the stock is expired" or "the refrigeration temperature is too high" issues. It is noteworthy that many employees ignore the system altogether in favor of grabbing the most convenient box.

FIFO! FIFO! FIFO, FIFO, its off to work we go. *whistling* FIFO, FIFO, FIFO.

FIFO by Eidako July 1, 2003

FIFO 

Fucking Idiot From Ohio

That dude from Ohio can't drive because he's a FIFO

FIFO by Emily September 14, 2003

FIFO 

Fucking Idiot From Ohio

Hey, that FIFO can't drive! Dude, get the hell out of the way!

FIFO by Katie Prudence September 13, 2003

FIFO 

Fit In or Fuck Off

Used when interviewing new prospective employees.

Well, you either Fit In or Fuck Off!! It's as simple as that.

FIFO by Fenix July 30, 2003

FIFO 

a less than obseen acronym describing traveling motorists from Ohio. "Freakin' Idiot From Ohio"

"why is this FIFO doing 65 MPH in the show-off lane?"

FIFO by John (SC) January 18, 2005