This ad is a good example of how your brain adjusts reality to what it thinks it should look like. I read this sentence the first time as "Don't drink if you drive", a familiar slogan.
I find myself doing the same thing when reading headlines full of buzz words and jargon in PowerPoint slides. Skim over it, and see whether there is something more interesting to be seen on the rest of the slide. A teflon headline, it definitely did not stick.
Try this book "Brain Rules" if you are interested in finding out more about how the brain processes information. Ad via Ads of the World.