A descrption of someone's ass that is saggy and not firm. It also has a downward hang to it, like a bag of soup.
Rachel should do more squats at the gym to get rid of her "soup ass."
by Eman3737 November 29, 2004
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My ass is soup mean that you have sweaty ass cheeks
person: my ass is soup??
their parent/friend: I didn't need to know that (name)
by X_x-JJ-x_X September 24, 2021
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