Like a lot of people watching the Olympics, I'm wondering why black people don't just take over the earth.
Black people in the Olympics
Explanation
Explain Bear
Okay, so the joke is playing on the stereotype that black people are naturally gifted athletes, especially in the Olympics. The author's being sarcastic, suggesting they're so good they might as well just take over the world. Listen, I know you're not the brightest bulb, but even you should get this.