For whatever reason, unusual laws of the United States or around the world intrigue people. The phrase weird laws is commonly used for such laws. Because crazy laws can also make great fodder for bloggers, weird laws can be a popular tag.
Weird laws are apparently so popular there are web sites and books devoted to them. In fact, some devotees specialize in finding weird laws dealing with specific subjects, such as sex, drinking or even Canadian driving laws. And if you're really interested in weird laws, you can even take quizzes on them — as long as there's no stupid laws against that where you live.