These maps compiled by advertising firm Marchex show which states are the most and least likely to curse and to be courteous. The company analyzed phone calls from the past year, and found that Ohio is the most foul-mouthed state, while residents of Washington are the least likely to curse. According to their findings, South Carolina is the most polite, while Wisconsonites are the rudest. You can find a larger version of the charts here.
image via Marchex