What are the jokes in the game called?

A horse met a donkey and immediately said hello: "Brother Donkey, I heard that your wife gave birth to a baby. Congratulations! " "

Hearing this, the donkey said angrily, "Congratulations, you gave birth to a mule!" " "

Recently, an English doctor, a German doctor and an American doctor were chatting.

The British doctor said, "Medicine in China is really advanced. We can take a kidney from one patient and transplant it to another so that he can find a job after six weeks. "

Then, the German doctor boasted, "This is nothing. We can take a lung from one patient, transplant it to another patient, and let him find a job after 4 weeks. "

In order not to let others be better than themselves, the American doctor said, "You guys are behind. We found a brainless man from Hawaii and put him in the White House. He promised us that half the people in the world could not find jobs. " ：