He's warned them about horseplay before. We'll see how much they learned.
Electricity has gotten expensive, heat your outdoor pool the old way. This is how it's done in Germany!
I would make puns about this pool being hot and all, but they probably wouldn't go over too well. It'd be wheel embarrowsing.
Is it too soon to make a joke about flooding in the South? Probably. ~Not-So-Handy Andy