A genteel word girls use to describe themselves when they've been too
slutty for their man'
s liking. Often explained away by the 'good
girl' as it being that time of the month when women are at their most horny.
"I'm sorry I was brassy the other
night at the
dance when I was dancing glued up against you and grabbing your arse and sticking my tongue down your throat, but we're
cool, aren't we?"