I have personalized plates, it's the name of a old UK rock band most people in the US don't know. I enjoy making up explanations on the fly wherever someone asks me what the plate means. The one time a stranger asked me and I gave the real answer, I don't think he believed me.
The state of Ohio has a website where you can enter what you want your plates to say, then it will display that plate. The DMV went to a great deal of trouble to predict the vulgar/offensive/inappropriate words someone might try to have made, but they obviously couldn't predict the clever variations used in spelling those words. The site will display them, but it's doubtful they would get by the crack staff at the local DVM.
As we were driving a few years ago, Mrs Duke began uttering nonsense words. When I asked what she doing, she replied she was trying to figure out what the personalized plate ahead of us meant. When I saw the plate, I actually laughed out loud. I finally explained the "word" she was trying to read was the owner's amateur radio call sign, a jumbled series of letters and numbers, something like KC8BMK.