Firstly, I want to say this is an ingenious contest/topic. Secondly, I want to add this photo.
Let me kind of explain what's going on... In the photo, she (this is not me) had been trying to get him to go over a little make-shift jump we had set up. He refused the jump, and she started trying to make him back up but I told her, "No, no, just turn him around." His mouth is gaping like that because he'd had so much momentum going forward, then suddenly he was being asked to go backwards and he was like "WTF?!" That's why everything looks so wretched. He's a mouthy horse anyway... recently retired OTTB.