Doctor #1 “You know, a patient whom I treated for an ulcer died yesterday. The autopsy showed he had cancer.”
Doctor #2 “Well, I treated a patient for jaundice for an entire month, but the autopsy revealed he was just Chinese.”
First man: “Do you know who Abraham Lincoln was?” Second man: “No.” First man: “And who Moshe Dayan was?” Second man: “No.” First man: “See, you don’t know, but I do. It is because every evening I take classes or go to the museum.” Second man: “Well, and do you know who Vasily Ivanov is?” First man: “No. Who is he?” Second man: “He’s the guy who visits your wife every evening when you are in class or at the museum.”