That was the Slim song that blew up the martians' heads in Mars Attacks, after Richie Norris figured it out while visiting his grandma in the old folks home. Howard Stern claimed today, however, that he and Fred Norris did a bit many years before on WNBC where aliens attacked earth and somehow they figured out that playing Una Paloma Blanca made the aliens blow up. Further research is needed but that is pretty weak if true.