These can come off as boastful, but they also give a quick peek into the driver’s personality or lifestyle. On the other hand, many drivers use their plates to add humor or a touch of humility to the often stressful experience of driving. For example, you might spot a tired-looking minivan proudly sporting “TIREDAF” or see “IH8TRAFK” flashing by in a long traffic jam—little moments of shared frustration that can make you smile.