开口成脏

開口成髒
kāikǒuchéngzāng
(Internet slang) to use foul language (pun on 出口成章 chūkǒuchéngzhāng)

CEDICT

internet slang

Entry Composition

1 开口 kāikǒu
  1. to open one's mouth
  2. to start to talk
2 成 chéng
  1. to succeed
  2. to finish
  3. to complete
  4. to accomplish
  5. to become
  6. to turn into
  7. to be all right
  8. OK!
  9. one tenth
3 脏 zāng
  1. dirty
  2. filthy
  3. to get (sth) dirty