Taivo A Taiwan Mandarin dictionary

開口成髒

kāikǒuchéngzāng

ㄎㄞ ㄎㄡˇ ㄔㄥˊ ㄗㄤ

Simplified 开口成脏

  1. 1(Internet slang) to use foul language (pun on 出口成章[chu1 kou3 cheng2 zhang1])

Keep 開口成髒 and it comes back until you know it.

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