There are so many different types and styles of funny traffic signs that you are sure to be impressed with what you find out there. Take the time to learn about your options, what messaging or wording you can and can't print on signs, and which companies are the best to work with. There are some regulations about what signs can say in public, but nothing exceedingly strict, so don't worry about not getting the sign that you want unless you're an excessively offensive person.