Two eminent retired physicians met at a medical school reunion. One was English and the other, American.
The conversation turned to their last roles before retirement.
Said the Brit "I spent my last five years as personal physician to Prince Charles. One did not need to be a brain surgeon so the whole thing was a piece of cake."
"Well I'm damned!" exclaimed the Yank. "You know I just spent my last three years as personal physician to The President of the USA. I tell you, that was no easy ride. The guy had only two moving parts, the mouth and the asshole, and they were indistinguishable."