FIFO 

First in First out. (as in queue from data structures) as applied to when a virgin girl becomes pregnant the first time she has sex.

When I met Sarah she was just 16 and I was flabbergasted to find out she was a FIFO.

FIFO by MrGrumpyFace March 19, 2019

FIFO 

Fucking Idiot From Ohio

Someone driving in the left lane and there is nobody in the right lane. He must be a FIFO.

FIFO by Statman May 30, 2019

FIFO 

An abbreviation for Fucking Idiot From Ohio

Aw shit that FIFO is at it again.

FIFO by Lada23 July 31, 2020

FIFO 

F**!**g Idiot FROM Ohio (Driver) Gives an unfriendly gesture used almost exclusively by FIFO drivers. When another driver does something polite, an FIFO driver will give a small wave with his/her middle finger as their sign of thanks. This usually gets strange looks from drivers from other states, but to Ohioans, it's instinct. FIFO drivers are the worst in the world. The will speed up as to NOT let you merge, they will even wreck their own car to stop you from merging. If you try to merge in front, you get the "Ohio wave". If you fail to merge in front or if they overtake you on the right lane, expect a "brake check" where the FIFO will jam their brakes, even stopping traffic on the Freeway. FIFO drivers will race, pushing their cars to the limit to get to a red light so that you won't get up front. Then barely accurate several seconds after the light turns green. Simply honk your horn to get the "Ohio wave". If the light you are approaching is green, the FIFO will slow excessively, anticipating it to turn red. FIFO break the speed limit going uphill, but will wear out their breaks to go extra slow down hill. FIFO drivers have been known to kill families by NOT letting others pass on a 2 lane road by accelerating, even if they have had you stuck going 15 mph under the speed limit for the last 5 miles.

Look how bad that person is driving! Oh look at the license plate, it's a FIFO driver.

FIFO by Chuedog November 25, 2019

FIFO 

A fifty dollar bag of chronic.

"Can I get a fifo?"

FIFO by Diego September 1, 2003

FIFO 

First In, First Out.

1. This term indicates that once a playa has hit some skins or copped some booty he is First in, First Out.
2. It is commonly used in relation to the accumulation of hits a playa has had, being the amount of times he scores with a whore.
3. Once in effect, the FIFO rule, will exclude any hoes that have already hit by another playa and consequently does not add to one's score.
4. The FIFO rule must be observed under all circumstances.

FIFO baby, First in First out.
Once I hit that ass it don't count no mo'!

FIFO by Ci-$, aka Ceasar Leo April 4, 2005

fifo 

fifo means cunt....so therefore fifo fur, is cunt hair... also known as pubic hair

You have the intellegence of a dogs fifo

fifo by Pink_Faerie June 22, 2004