The reverberation of an ass, as it jiggles during spanking or sex.
When Orlando smacked Sasha’s booty, he got hit with the jiggleback.
by sashsav December 10, 2019
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When performing sex with a woman that has a nicely formed ass, in doggie style position, every pounding thrust causes her ass to jiggle back at you, therefore enhancing the back and forth movement.
That girls got some nice jiggleback.

I need to get some jiggleback tonight!
by ST1NGRAY1979 March 28, 2017
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