the origin of this saying

[cacian]

''get off your high horse''

It seems that in real term the word high horse on its own does not exist because we refer to horses as horses and never a high one although the word high appears in the twoword word highway is in motorway

and get off by the online free dictionary :

to start, as on a trip
to leave

So combining the two seems rather odd combined if we went by our understanding of things and the true meaning words.

Are the true meaning of words being churned for the sake of sounding a saying?

[WyattGwyon]

This link explains the etymology:

http://www.etymonline.com/index.php?term=high%20horse

[cafolini]

But it was said first in Troy to a man that was standing on the Troyan horse. It was dangerous: a slip, a fall and a broken neck.

[cacian]

This link explains the etymology:

http://www.etymonline.com/index.php?term=high%20horse

Thank you for the link.

But it was said first in Troy to a man that was standing on the Troyan horse. It was dangerous: a slip, a fall and a broken neck.

cafolini thank you this is really interesting.
When you say standing do you mean with both his legs uprightish on the saddle?

[cafolini]

He was the first circus man. The day of giants was over. The saddle was too broad, so he stood on it. Homer, loaded with fermentation, was more surprised than Alexander Pope when he tried to make the ancient gods victims of morality. The latter did achieve a partial victory, however. The number of pagans was reduced.