Let the cat out of the bag

rahasjaːnni bajaʈapeʈʈaɖan ɹahɐsɪɑːni beɪɐteɪpdadəm

In Telugu రహస్యాన్ని బయటపెట్టడం (Rahasyaanni bayatapedadam)

This idiom, meaning to reveal a secret, is a common expression in Telugu.