Top Definition
The percentage number that indicates how nice someone's ass looks inside their pants, shorts, bathing suit, skirt, dress, or underwear. The closer to 100%, the better that ass looks. May be abbreviated as ATP.
"Denise always buys the pants that make her butt look perfect. Every day, she's got a 100% ass-to-pants ratio."
by Yet Another Josh Cohen November 13, 2007
5 Words related to ass-to-pants ratio

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