How can a rabbit be stronger than a football hero? how can a rabbit be more powerful than a big strong man? In the world of advertising this is quite possible. Consider the example of Jacko, this great Australian football hero recently appeared on TV and yelled at the audience to buy products. Jacko's angry campaign worked well in Australia, so Energizer batteries invited him north to sell their product in the United States . But Jack was yelling did not convince the American audience to buy batteries. So, goodbye, Jacko, hello, energizer bunny, the little toy rabbit that has sold for more batteries than Jacko.