Definition- Fat Friday, also commonly referred to as 'Greeday', is the last Friday of the month where one can simply binge on any food one desires. Fat Friday is set aside for those who maintain healthy bodyweight on normal days and not for the continuously gluttonous or obese.
Comrad: Friendo, why you be eating so much today?

Winston: Cousin its Fat Friday you know. Gotta let loose.
by TommyTheCat91 May 29, 2014
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A designated cheat day on which you are allowed to break your diet and eat full-fat (i.e. not "diet" or "lite") food, as complete abstinence is impossible for most people. It also provides a reward for the sticking to your nutrition plan over the rest of the week, on the day you are most likely to break your diet because of lower discipline.
It's Full Fat Friday: pizza and ice cream for dinner tonight!
by Matti Matti Matti January 6, 2014
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Fat Bitch Friday is when you go out on a Friday night and are surrounded by fat bitches at the club. They stand in line snacking on pork rinds and trying to flirt with the doorman to skip the line, but end up having to wait. They always travel in packs.
Man this club is really known for Fat Bitch Friday. It is appropriate to wish fat bitches a "Happy Friday"
by The Real Handsome Rob February 4, 2016
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Is when a seemingly skinny girl is abnormally hungry and wants you to take her for food as soon as possible because she is obviously starving.
"Hey Mister, It's fat kid friday, scoop me up and lets nosh.
by theforeclosureguy February 1, 2012
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A weekly event where male apes seek out fat chicks for carnal pleasures.

Fat Chick Friday can be competitive; each ape hunts for the most disgusting fat chick beastie to be slain on a trundle bed.

Fat Chick Friday tends to result in a mix of hilarious tales of triumphs and sorrows. It is growing in popularity nation-wide in the U.S. Some countries cannot celebrate the holiday due to lack of fat chicks.

Note: The trundle bed is not the only proper place to slay these beasties. Get creative.
Ape 1: "It's Fat Chick Friday!"
Ape 2: "FCF baby!"
Ape 3: "Once a fat chick gets a piece of meat, she won't let go!"
Ape 4: "I got one right now...Gitouttahere!"
by HungryEyesforFatChicks July 4, 2011
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Fat bitch Friday a recurring event that happens every Friday from 12 AM to 11:59 PM. The Boys are suggested to go out and find the fattest bitch they can find and get with them. Any girl over 150 pounds is valid for this event. The reason we celebrate Fat Bitch Friday is to humble ourselves and to honor the Fat lives matter movement which doesnt really matter. This event is not to bring down Fat women but to give them a chance in life, because who knows maybe we all secretly like fat bitches, gotta find out some how.
Kevin: Yo wtw for tn im trying to go out and get some girls
Ant: Perfect its Fat Bitch Friday and I have a girl thats 165 and her friend is 173, which one you want.
Kevin: .... 165 please
by Niggalations Prophet June 26, 2020
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The last day of the business/school week, otherwise know as Friday, is a day where all may indulge in "fatty" foods without remorse of keeping a diet. It may also be looked upon as a day to look forward to relax, and release one's stress by eating "fatty foods".
Sadie: OMG I'm so stressed. I wish I could eat a whole tub of Ice Cream

Priya: Wait what day is it?

Sadie: Friday?

All: OMG FRIDAY FAT DAY!

*Both go and indulge in cookies n' cream ice cream*
by swagman123 December 17, 2011
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