GET OFF (ONE’S) HIGH HORSE, GET OFF/GO SCOT-FREE, GET (ONE’S) ACT/IT TOGETHER: American English Idioms #84
GET OFF (ONE’S) HIGH HORSE This idiom typically means to stop being arrogant or haughty, and it is often used when someone has been proven wrong. The phrase comes from the old English proverb ‘to get off one’s high horse,’ which was believed to be a literal act of getting down from one’s horse. Most…