abrir el pico

Literally, "to open [one's] beak"

abrir el pico (first-person singular present abro el pico, first-person singular preterite abrí el pico, past participle abierto el pico)

1. (idiomatic) to open one's mouth

• “abrir el pico”, in Diccionario de la lengua española [Dictionary of the Spanish Language] (in Spanish), online version 23.7, Royal Spanish Academy [Spanish: Real Academia Española], 2023 November 28