Top Definition
The high, tight and firm ass achieved through vigorous jazzercise classes. Jazz ass is particularly sculpted during jazz squares, hops, plies and grapevine moves. Jazz ass may also be used to refer to the deep pain in the ass muscles following these activities.
"Wow that babe has a banging jazz ass!"
"I better have jazz ass after all the shit I had to do in that class".
"Oh my god I have painful jazz ass this week thanks to the new instructor".
by Gottalaughgirl November 24, 2013

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