Top Definition
excl. Vocal simulation of the sound of a vaudeville trombone, used to denote embarrassment or misfortune. More often directed at others than used self-referentially.
Person 1: I waited in line for six hours hoping to score the midnight release of the PS3, but by the time I got in the store, they were sold out.

Person 2: Bwah Bwah!
a term used by children with hearing impairments, it began by being referred to a boy, but has evolved into it's own language
hey bwah bwah, here you go bwah bwah
by justin miller November 15, 2003
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