Smile … and keep it there! True, you’re not allowed to show your teeth in drivers’ license photos. But, unless you have black teeth or a colossal under-bite, flash those pearly whites in University ID pictures. If you want to avoid a lifetime in the Campus Card Services awkward pictures hall of fame, then don’t become a “dropper.” Hollon says she and her coworkers laugh about the pictures that result from students dropping their smiles right before the flash. Michael Buchanan