The bumper stickers that I wish were non-existant are the ones with too many words in too small a size.

I am always curious, and even though I know that the sentiment being expressed by one of these poorly-designed stickers is probably stupid, humorless, and/or representative of a point of view with which I disagree, I HAVE TO READ IT!!! ~ thereby putting myself and others on the road with me at risk of an accident, as I squint to try to read the fine print and/or tailgate at full highway speed in an effort to get close enough to read it.

Well, I almost always control my impulse and resist the temptation to drive too carelessly in my effort to read someone's lame-ass joke or insipid sentiment, but I hate even having to deal with the problem at all...