Me canso ganso, “I’ll get tired, goose,” is a playful rhyming way to say that something will certainly be done. According to México Desconocido, the comic actor Tin Tan popularized it in the film Niño perdido (1947).
President Andrés Manuel López Obrador used it for a promise: “me canso ganso, estará funcionando el Nuevo Aeropuerto Internacional de México,” the new international airport of Mexico will be operating.