A BWAB is an abbreviation for the term;
'Born Without A Brain'
You would usually say it to chavs, gangsters, wiggas and anyone else who has NO sense of style, shows incorrect usage of the English language, and generally has incompetence written all over their faces.
'Iya Der Iz u Aite Blud?' - DAN
'Dan, you are definately a BWAB!
'Yo Momma iz so fat..dat she be.... -
'shut up you BWAB'
(B-WhAB) noun: A female who on a regular or semi-regular basis consumes entirely too much alcohol in the process of doing so they become openly flirtatious and or wasted and make asses of themselves.
Yo man your girls bein a major BWAB tonight.. handle that shit.
Whatever Ken. You got bwabs!
An oracle of all information - most notably has a mind full of numbers.
The correct usage would be "Hi Bwab". An appropriate response to anything "Bwab" says is generally "Oh right."