when a person finds it in their best intrest To complain or protest, especially in an annoying or persistent manner. until a subject gives in.
coming from the word boo! -to cry, moan , whinge, sob, strop and the word ass- yourself, the one doing the boo.
Sound Guy 1- "i like booass she is really cool"
Sound guy 2- "yeh me too she is Miss ace after all"
THE BOO'ASS-"whinge bloody whinge, drone whinge whine moan cry demand demand demand BLAG BLAG BLAG!!!"
Sound Guy1 - " better do what she says number 2"
Sound Guy2- "what if i dont want to be blagged this time"
THE BOO'ASS- big whine leads to inevitable blag