The manager cut him down to grass after he bragged about his achievements.
Менеджер поставил его на место после того, как он хвастался своими достижениями.
Definitions
To humiliate or humble someone, often by criticizing or belittling them, especially after they have acted arrogantly or boastfully. The phrase suggests bringing someone down to a lower or more modest level, similar to cutting something down to the ground or grass.