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To engage in sexual relations with the person who is the nearest geographical distance to you. This usually occurs without regard for self worth.
Although Alan had been making eye contact with the fetching young woman across the bar, he decided to indiscriminately proximity fuck the less attractive, unsavory woman to his immediate right, out of ease.

Following the devastation of Tom's breakup, he went to a bar and proximity fucked the first woman he met.
by SaucyK January 20, 2012
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