Khrushchev says to Zhou Enlai, "The difference 
between the Soviet Union and China is that I rose 
to power from the peasant class, whereas you came 
from the privileged Mandarin class." 

Zhou replies, "True. But there is this similarity. 
Each of us is a traitor to his class."

http://www.netfunny.com/rhf/jokes/new89/china.863.html