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When retelling a story it's the Sound one makes when they describe getting hit by something or someone, or something falls down.
Yesterday, at baseball practice, when I went to catch the ball I hit the wall like DADOOSH and I blacked out for a couple of seconds.

That guy went dadoosh as he hit the floor.

That car went flying and then dadoosh hit that other car.
by Esteban209 February 24, 2010