This is for the health food fiends, the natural-fabrics gang, and all those green-head environmental hustlers who stomp around in the "natural": your key word is meaningless. Everything is natural. Everything in the universe is part of nature. Polyester, pesticides, oil slicks, and whoopee cushions. Nature is not just trees and flowers. It's everything. Human beings are part of nature. And if a human being invents something, that's part of nature too. Like the whoopee cushion.