open one's mouth
William, ¿vas a abrir la boca y sacar la lengua?
William, are you going to open your mouth and stick out your tongue?
— Ahora me ves 3 (2025)
Él no es capaz de abrir la boca delante de su padre.
He can't open his mouth in front of his father.
Aquí no se puede abrir la boca sin ser citado inmediatamente.
You can't open your mouth here without being immediately quoted.
Y a ti te da pereza abrir la boca, una vez más.
And you can't be bothered to open your mouth, once again.
— ¡Kin-Dza-Dza! (1986)