A rim job is when someone is playing a game such as beer pong and the ball circles around the rim of the cup and flings out, teasing the player into thinking they would get a win, though they do not.
This definition also applies to similar games such as basketball or mini golf, where there is a ball meant to go into a circular hole.
Kyle almost won beer pong, but he just gave the cup a rim job, damn.
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Out on the field, I was giving rim jobsall night, so I did not win.