FBS stands for full ball syndrome. If you have not released a load in atleast 24 hrs or more, you may be suffering this malady
Dam baby, I really need some sugar, I have a deadly case of Fbs
by sugarbear March 13, 2014
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Flappy Bird Survivor

A person that has been in the same room as a person playing FlappyBird and raging.
Girl: Omg, I'm a FBS! Victoria was throwing books at people
by AntiRanchGirlOC February 20, 2014
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French Baguette Styley

Abreviation, to be well hung, have an abnormally large penis, it is usually split into three parts, Senior, Intermediate and Junior starting at the tip going to the base, Junior and Senior interchange but Intermediate is always in the middle. If you are FBS you bang a lot of birds, but don't like bragging about it.

Geoff likes boys and willies
Geoffrey is FBS, also like a pringle tube, or a beer can...swinging
by Beanseen February 5, 2010
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the Fluffy Bunny Squad a group of people from holt high AL that usually is a stoner, plays hacky sack, in is a juggalo (fan of icp)
FBS, Bunnyism, spades, mulit man, toothpic, ect srry 4 the 1s i left out
by MMSullivan_FBS October 12, 2012
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FBS is short for the Fucked-up Broadcasting System is used when somebody is so trashed, they feel the need to tell people about it.
Joe: "Man, I'm so fucked up!"

Friends: "Joe's using the FBS."
by Dorene January 27, 2008
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Fizzy Belly Syndrome - the feeling you get in your tummy when you gaze into the eyes of your loved one. Like the word 'love' for people afraid of the word 'love'
"Darlin', you've gone given me a bad case of FBS"
by Prophylactic Man January 25, 2010
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Stands for Female Bassist Syndrome. This is the condition men in to alternative music get when they see a woman playing bass. Symptoms include drooling, temporary insanity and mental retardation.
"Oh why can't Liz Buckingham marry me?"

"Clasic case of FBS. She could be a complete bitch and you've never actually seen her face under all that hair."
by MingeyJohn August 27, 2011
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