The German doctor says: "that's nothing, in Germany we take part of a brain, put it in another man, and in 4 weeks he is looking for work".
The Russian doctor says: "gentlemen, we take half a heart from a man, put it in another's chest and in 2 weeks he is looking for work".
The United States doctor laughs: "You all are behind us. Five years ago, we took a man with no brains, no heart and no balls and made him President. Now, the whole country is looking for work!"
This particular joke won an award for the best joke in a competition held in Britain