Here's a breakdown of the meaning:
* High horse: This metaphor refers to a horse that is raised higher than other horses, giving the rider a commanding view and a sense of superiority.
* Up on: This emphasizes that the person is literally or figuratively positioned above others.
Here are some examples of how the phrase is used:
* "She always gets up on her high horse whenever anyone disagrees with her."
* "He's up on his high horse again, preaching about the importance of hard work."
* "Don't get up on your high horse and judge me."
The phrase is often used in a critical or ironic tone, suggesting that the person's perceived superiority is unjustified or simply annoying.