Okay, first off, be fair. Make it visible. I have yellow ties on mine.
Secondly, grab a camera and wait, because its going to be freaking hysterical to watch.
I sound like a sadist
If you're a sadist, so am I.
Nearly wet myself laughing at my horse the first time he met Mr Electric Fence.
We were at a show and my friend offered for me to chuck him in her little yard next to her float instead of trying him to my float all day. He got too close and then ran around for a few minutes, bouncing off every side of the yard, kicking over water and feed buckets and running in to my friends horse. My friends horse stood in the middle of the yard laughing at him with us. He eventually stopped and didn't go near the edge, no matter how much we tried to coax him over.
They learn real quick and if it's a small area, best not to be in there with them.
My only regret - not having my camera on me