In the annals of good ideas, this falls well short of, say, the wheel.

Australian Harrison Williams decided to jump onto a dead whale carcass and surf it while live, circling sharks surrounded him.

Brilliant, indeed.

Out on the boat with the boys and one of my mates thought it'd be pretty funny if I surfed the whale, so I just did it."

Williams managed to get back to safety and afterward, he realized he probably made a mistake. "Mum thinks I'm an idiot, Dad's not too proud either," he said.

Gee, ya think?