BA means bad ass, prounouced as B.A.
You're boyfriend is such a ba yet he is so sweet to you
by rockontracy February 24, 2005
Bad-Ass, cool, awesome, amazing, wicked, sweet
Judy is SO BA!

LKE OMGZ! Look at that girl! She's sooo amazingly cool! I wish I was as BA as her.
by _vapor88 August 27, 2006
Used to describe someone who is a bad ass. It can also describe acting like a bad ass.
OMG! He set off the fire alarm, that is so BA!
or
She said she was going to stay home and study, she is so not BA.
by FunkyPickle January 25, 2008
The abriviation of the word "Bad ass" used by young children and sons and daughters afraid of there parents to exclaim excitment.
Boy 1: I got these new ba glitter crayons!

Boy 2: Get away from me db you po me.
by Clint..... January 30, 2010
BA- short for Bad Ass;
(noun) a bad ass, some who looks cool in a sense of standing out of going against the beliefs of others;
(adj.) to be a rebel, bad ass;
(verb) to do anything in relation of being a bad ass, rebel.
(noun)- That BA ate a bowl of nails for breakfast without any milk,;
(adj.)- KJ looks BA today with his leather jacket stitched with Hello Kitty on the back;
(verb)- Hey Doren, lets BA it tonight and sneak out of the house.
by Cnotesharp November 19, 2009
Bad atmosphere i.e. the feeling that a temporary cloud of gloom is slowly descending over your mind caused by someone or something in your close vicinity that you feel the need to escape from urgently.
I'm getting a bad atmosphere/this is a bad atmosphere/he or she gives me a bad atmosphere e.g. Disney's Fantasia is a BA
by xenia t February 6, 2009
A Bare Ass, exposed as a taunt or an insult. A moon.
Lenny dropped trou and hung BA in the library.
by Cap'n Bullmoose April 30, 2005