don't wash your dirty linen in public
proverb Do not discuss very private, personal matters, especially those that may be embarrassing, in public or with other people. Hey, please don't wash your dirty linen in public—it makes me uncomfortable. I'm sure celebrities have handlers warning them, "Don't wash your dirty linen in public!" And yet the tabloids have new stories to cover every hour, it seems. Please don't wash your dirty linen in public—there's no need to discuss your divorce at the dinner party.
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