FAS

Federation of American Scientists.

They are an organization that has existed since the Manhattan Project. To this day they continue to exist for the sole purpose of providing YOU, the researcher, with information regarding all kinds of weapons from different nations as well as, given FAS's history, information on nuclear weapons and other WMD's.

"Please donate to the FAS."
-a little pop-up window that appears once in a while on the FAS website

by Dave September 10, 2004

FAS

Used at the end of every sentence by the enigmatic Olaf. One of the biggest rules in the world is that you never, ever ask what FAS means.

I like boob bubbles that pop and become bigger boobs and turn into boob bubbles.

FAS!

by Pelkiebum July 6, 2004

FAS

a fucking hot swimmer; anyone associated with a swim team that is known for his fucking hotness

Look Leslie! FAS is taking off his speedo!

by Dana October 11, 2004

FAS

Flat Ass Syndrome. Caused from sitting on your ass for excessive periods of time.

Man I've got a really bad case of FAS. I shouldn't of been a lazy bum all day.

by turkey 128 August 11, 2010

FAS

F : For
A : A
S : Second

Bruh I thought my homie nutted in my ass FAS

by Scrooble dong likes MacDondles August 14, 2019

Fa Fa

Is the definition of an awesome Father one who takes care of his children the single dad who does it all .

Look at that girls Fa Fa he does everything for her by himself

by Almightynessgemini October 12, 2016

fa-fa

commonly used in parts of western canada and various parts of western europe. 1. used most commonly when playing or splashing in any type of water from sea water to freshwater. 2. A general expression expressing happiness when entering a refreshing state, used by young and old.

"This is the saltiest fa-fa ever, but I like" Johnson exclaimed.

by Matt Parenteau September 19, 2006