George W. Bush says he doesn't think anyone is secretly adding subliminal messages to ads running against the Democrats. A Republican National Committee ad shows the word ``rats'' appearing on screen for a fleeting moment before the full word ``bureaucrats'' appears. The still frame from that ad is seen here. Aides to Democratic rival Al Gore gave The New York Times a slowed-down version of the spot. Bush says he hadn't heard anything about the controversy over the ad until this morning, but he says allegations of subliminal advertising are ``bizarre and weird.'' The man who made the ad says it's a commercial about health care, not rodents.