climb on (one's) high horse(redirected from climb on one's high horse)
climb on (one's) high horse
To adopt an attitude of moral superiority. My sister was a troublemaker as a teenager, yet she always climbs on her high horse and lectures me about everything. The radio host is known for always climbing on his high horse, despite the fact that everyone knows he's a creep.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.