Hello everyone, today is Friday, January 31st, 2020.
Our idiom for today is, "high horse".
This means that someone has an attitude of moral superiority.
Example 1
I wish my boss would get off his high horse and actually do some work. He talks to us workers as low-lifes.
Example 2
My older brother should get off his high horse and stop lecturing me. He was just as wild when he was younger.