1. The mother of British. (see British)

2. An imaginary figure that is theoretically capable of representing any person, place, thing, idea or dimension.

3.A nullifying response to any direct question asked that quickly deflects any awkwardness experienced from the initial question.
GuyI saw you parked down the lane with another man in the car and you were both in the back seat. Who was it that you were with?

Girl: British Ma
Both: *Laughter*
by IguanaChoonez May 6, 2011
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