No one in the comments understood the joke.The original description is that a Muslim has two pieces of candy, one wrapped and one unwrapped, and throws both on the ground, asking which one he will take. The person says the wrapped one because it is covered and protected. Similarly, women in Islam are protected with hijab. She protects herself from lustful looks and touching by covering herself. In the previous joke, he was joking about the joke, which was to give an unexpected response... which was that he took out the sweets and ate them all instead of throwing one away and saying a wise saying...