When I went out to bring Middle in to get ready for bed. I found Middle on one outside of the fence. And Willow on the inside of the fence. The leash was stretched tight over the fence.
Willow served her purpose as anchor, keeping Middle from wandering off.
As I brought him back in the house, I asked if the grass was greener on the other side of the fence. He didn't get the joke, but I was still amused.