穿幫 [ㄔㄨㄢ ㄅㄤ; chuan1 bang1]
  (TV or movie) blooper
  continuity error
  (theater) to flub one's lines
  unintended exposure of a body part
  to be exposed (of a scheme or trick)
  to reveal sth one intended to conceal through a slip of the tongue
  to blow one's cover
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