People with bumper stickers on their cars should be slapped in the jaw. Not content to shout their opinions at you face-to-face, they choose to also shout them from their rears while driving. On top of being obnoxious, it turns out bumper sticker aficionados may also be dangerous. According to a study by social psychologist William Szlemko of Colorado State University, drivers with bumper stickers, window decals, and personalized license plates are more likely to use their vehicles to express rage. This makes sense considering these people are already self-centered and oblivious enough to think their opinions matter. More details here.
