Let the cat out of the bag
tʃaɪniːzle̞tə tʃaɪniːzle̞tə o̞ tʃaɪniːzle̞tə ɽä sɯᵝ eɪtʃ aɪ ɛm aɪ tiː ɛs juː əʊ ɛm əʊ ɑː eɪ ɛs juː
In Japanese 秘密を漏らす (Himitsu o morasu)
This idiom, meaning to reveal a secret, is a common expression in Japanese.
Example
"彼はうっかり秘密を漏らしてしまった。"
