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25.
BAS
Ballistic Addon Studios

Group of people who make addons for a game called OFP
John: Yo BAS has released a new addon
Doe: kickass lets start an mp game
by 1337guy June 08, 2003
 
1.
Bas
Dutch name - shortened from Sebastiaan. Loving, caring person with a great sense of humor.
Everyone should have a Bas.
by hannibunny December 27, 2009
 
2.
BAS
Bitches. Aint. Shit.

A group of youthful teenagers who are known for their amazing ability at doing what they want, such as giving bitches purple dragons and fingering the po-po.
"whurrd you get your weed from?"
"bas."
"sickter."
by T April 01, 2005
 
3.
Short for bitch ain't shit.
guy 1: Man, she's retarded as hell.
guy 2: B.A.S.
by mofo's crazy January 18, 2009
 
4.
bas
shortened from 'bastard'
"yir deid ya bas!"
by Snakeheid October 16, 2003
 
5.
BAS
"Burning anus syndrome." The feeling of a "ring fire" around the anus after a really bad diarrhea. Will cause the sufferer to walk bow legged for a couple of minutes. Symptoms can last for 5 to 10 minutes.
awww man i have BAS i shouldent have eaten all that cury.
by afrak August 06, 2008
 
6.
BAS
BITCHEZ AINT SHIT
BAS but hoes and tricks
by THUGGYC May 20, 2010
 
7.
(aka Burning Asshole Syndrom)

The 'sickness' expierenced in the bathroom while depositing feces in your toilet the morning after eating several spicy things. Causes of this disease are things such as Buffalo Wild Wings' Blazin Sauce and Dave's Insanity Sauce.
"dude those wings last night caused me to have serious B.A.S. this morning"
by nstalgicnaysaer April 27, 2006