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A stroke played in Australian handball where the ball strikes the corner of the wall and the floor, making the ball roll back along the ground towards the opponent. Flat butts are almost impossible to return.
Great shot! What a flat butt!

Man, I'm in great form over summer. Hitting flat butts everywhere.

Mate, I'm in flat butt heaven!
by AwesomenessXYZ February 07, 2010
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