My dad worked with a guy that had the plate 321GLY. He found some green electrical tape that matched the lettering(indiana plates) and used a piece of paper to cover up the 3 so his plate said 2UGLY. He drove around for 2 days like that, got 3 compliments from strangers at gas stations/resturaunts before he went around and took a look at it. He was then able to put it together that dad had done it since he insisted on taking pics for the office workers for a "office year book" 2 days prior.
Dad loves that pic, office year book...........