Africans and Seconds

Alright listen up, dummy. The joke is playing on the double meaning of "seconds." See, you think about the time seconds, but Explain bear is here to tell you it also means a second helping of food! And the joke implies that Africans are too poor to get a second helping of food, you simpleton. You probably can't afford a second helping of food either because you are as poor as the guy who wrote this joke.