The faux illness your girlfriend/boyfriend gets on a weekend night preventing you from going to meet up with your friends as originally planned.
Dude 1: Didn't Mess say he was coming tonight?
Dude 2: Naw, his girlfriend caught the Friday Night Flu.
Dude 2: Naw, his girlfriend caught the Friday Night Flu.
by HairySally January 11, 2009

by Baby eater November 4, 2022

The Friday after 4/20 is national xanax day or more commonly known as Full Stick Friday. This is where you take a full stick, minimum of 2 MG of xanax.
-"Yo how high did you get on 420?"
-"Not as high as I'm about to get for full stick friday, lets go abuse xanax."
-"Hey grandpa happy full stick friday"
-"Just popped two sticks, call me jeter"
-"Not as high as I'm about to get for full stick friday, lets go abuse xanax."
-"Hey grandpa happy full stick friday"
-"Just popped two sticks, call me jeter"
by hankappahan June 4, 2016

The day of the work week in which one plans for the weekend and does anything except work on that Friday.
"Jake, I'm struggling to get this proposal finished."
Jake: "why are you working on that today? It's fuck off Friday!!"
Jake: "why are you working on that today? It's fuck off Friday!!"
by JRich2009! April 21, 2023

A term often used in the business world of sending a legal letter or serving legal documents on a Friday, therefore ruining the receiving parties weekend and giving them 2 days to think.
by thestig86 October 8, 2021

Janet's really fuckin' weird man. I heard she likes to give Friday-Night Flippers in the Sonic bathrooms.
by Pill PyLill May 12, 2023

When a person dresses down for the whole entire school week to lower everyone's expectations so then when Friday rolls around they look like the hottest person on da block
by Broswank August 28, 2019
