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The common pronunciation of Bourgeoisie" as
" boo - zhwah" should be self-explanatory for this.
"Bushwa" was a 'bridge word' for many people in those times, it could mean "Bourgeoisie" or "Bullshit" or both at the same time
Don't give me any more of your Bushwa.
Bushwa is used to indicate that something is reactionary or allied with the property class. Leadbelly wrote the song in 1946 in disgust at being denied service at Washington D.C. restaurants.