When you're advertising potentially nasty medical-related products or causes, take a cue from the pharmaceutical industry. Those guys can make an ad for Irritable Bowel Syndrome treatment look like a beloved home movie. On the other end of the sensitivity spectrum is this ad from Thailand's Red Cross , urging people to donate their eyes when they die so that others may see. Good cause. But my god, is a huge dump site full of wasted, disembodied eyeballs really the best way to get your message across? (No). The horrifically misguided full ad is below—not for the squeamish.