My first rule of expository writing is to be clear. The humor in this joke plays on that.
So this couple were driving north following the Lake Superior shoreline, and a ways northwest of Milwaukee, they passed a sign that read, “Oconomowoc City Limits.” A discussion ensued about how to pronounce the name of the town. Soon they came upon a fast food place and they pulled in. They went inside, and the lady said to the clerk behind the counter, fairly jumping with eagerness, “First, tell me where we are, and say it slow so we can get it!” The clerk got a puzzled expression on her face, but she leaned forward and said, “bur, ger, king!”
Har har. Oconomowoc is a real place, too:
Here’s the lesson:
When you write, think of how you might be misunderstood, and prevent that.