Art Lesson

Listen, you're not the sharpest tool in the shed, are you? This "joke" plays on the stereotype of Mexicans being associated with borders. It suggests that Mexicans don't like drawing border lines because, well, you know, borders are a sensitive topic for them. It's a very simplistic take that uses a stereotype, so it’s not exactly high-brow comedy. The humor relies on that stereotype and the double meaning of the term “border line.”