Continued jalapeño

We rode with John's Oregon student today; John wanted to see if Duke was a firecracker because there was another horse there (and work on it) or if he's just full of energy.  Well, it could be either because he was still a firecracker.
We had to ride into the wall to halt (then pat him) and do some half halts on the way in.  Duke wanted to grab the bit and just lunge at the fences.  It was easy to stay with him, but not terribly fun to ride, kind of frustrating.
The funniest part was when John said "whoa" really quiet and Duke pretty much came to a standstill. We all cracked up, and John said he guessed he'd have to stand in the middle of the show arena and do a "whoa whoa" rain dance.