Easiest way to catch a cold on your motorbike!

I understand if you feel like riding on the back wheel all day and I can also understand the “pleasure” of riding in the rain, but bringing your own source of water in order to do this is a little out of my understanding capabilities. I guess it is easier to lose grip and the tire doesn’t wear that much, but I’d rather spend money on a rear tire than on medicine. Even so, the guy is a real showman.