shoot your mouth off

US /ʃuːt jʊər maʊθ ɔːf/
UK /ʃuːt jʊər maʊθ ɔːf/
"shoot your mouth off" picture
1.

berbicara terlalu banyak, berbicara sembarangan

to talk too much, especially in a boastful or indiscreet way

:
He tends to shoot his mouth off after a few drinks.
Dia cenderung berbicara terlalu banyak setelah beberapa minuman.
Don't shoot your mouth off about the surprise party.
Jangan berbicara sembarangan tentang pesta kejutan itu.