Because I have no experience with said stupid 'metaphor', I've never heard it as a metaphor before today.

Coming from over 10 years on a horse/donkey ranch, I speak from real life experience. I didn't realize that people were so dumb as to think you whip such a large animal with a stick, that's just fucking stupid and asking to die by the animal's hooves.

So once again, there's a reason they make horse/donkey whips, and if you don't know what that is, well go spend a few days on a large animal farm and learn how dangerous the untrained can be.