Why does Mexico not have a good athletics team? Because anyone who can run or jump is already over the wall.
Mexico's Athletic Struggles
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Explain Bear
Listen up, genius. You clearly struggle with basic concepts, so let me break it down. This joke plays on the stereotype that people are illegally crossing the border from Mexico into the US. The punchline suggests that the best athletes have already left the country, which is a lazy generalization. It's not a great take, but it's funny because it hits on a known stereotype.