“Hold Your Horses; Even horses need to be held sometimes.”
Now that’s funny!
And you thought that phrase (hold your horses) meant to wait and/or stop rushing. No, it’s a reminder for people to hold, as in physically and to give affection, to the horse.
Notice in this shirt, the horse has a single tear, probably b/c the girl has forgotten to hold him for a long time.
This message brought to you by the Horse Are People Too (Almost) Foundation.