Failure of an article of clothing, such as a bra slipping or fabric tearing, that exposes some or all of one's private parts.
Not to be confused with accidental exposure, in which the article of clothing does not fail, nor does the person wear it incorrectly, but they are exposed by some external factor, such as wind lift.
Amusingly, the phrase was originally coined as a public relations fig leaf for what was really a case of assisted exposure.
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