It's not an idiom, it's a saying. If the horse is blind, it can't see either the nod or the wink, so they'd mean the same thing to the horse. You nod when you're agreeing and you wink when you're sneaking around with something.
LOL. All depends on what part of the country the man is from. In rural Ga or Alabama a horse that don't look good might be blind. Anywhere else the horse surely has bad conformation or is on the thin side. :)
Nothing. The correct idiom is "get OFF your high horse," meaning stop acting so conceited as if you are above everyone else.
This idiom comes from horse racing. You'd bet on whichever horse's nose would come in first. If you make a good guess, you're "on the nose."
As in "I am so hungry, I could eat a horse"- means you are extremely hungry- since a horse is VERY big.
Unfortunately it can mean the horse is going blind
Getting on your high horse means that you are looking down on someone with a haughty or superior attitude.
This is a metaphor, not an idiom. They are comparing that person to an angel, which is a supremely good being in religious lore.
Actually its "dont look a gift horse in the mouth". It means dont judge a present somone gave you. This came from when people gave horses as gifts. The gift horse was usually old, and you can tell a horses age by looking at its teeth.
The horse and carriage are obsolete as modes of transportation, so this idiom means that something has become obsolete or passed out of common usage.
a whorle eye is when one eye is brown and the other is blue. in some instances it may also mean the horse has a blind spot in the eye
It is not an idiom, it means your nose is itching.
It's not really an idiom. It means "what are you thinking about."