Question

Lock the Barn Door after the Horse Is Out to take careful precautions to do the right thing after it is too late

Accepted Answer

If you failed the quiz, why study? That's locking the barn door after the horse is out! This popular proverb can be found in many languages. It was first used in French in the 1100s and later appeared in English. If you put a prize horse into the barn for the night and then forgot to lock the door, it is possible that the next day you'll find the horse is gone or stolen. It would be pretty foolish to lock the barn door then, because the horse is already gone.

Idiom	Lock the Barn Door after the Horse Is Out
Example	If you failed the quiz, why study? That's locking the barn door after the horse is out!
Meaning	to take careful precautions to do the right thing after it is too late
Origin	This popular proverb can be found in many languages. It was first used in French in the 1100s and later appeared in English. If you put a prize horse into the barn for the night and then forgot to lock the door, it is possible that the next day you'll find the horse is gone or stolen. It would be pretty foolish to lock the barn door then, because the horse is already gone.

Horse Barn Lock Door Failed Quiz Study Locking