Nikita Khrushchev was very proud of his working class origins. Although from a poor family, he had risen to be Premier of the Union of Soviet Socialist Republics.
On a visit to China, Khruschev started teasing Chou En Lai, because Chou En Lai's family had been wealthy merchants. Khruschev went on and on about Chou En Lai being of the capitalist class, whereas he Khrushchev was truly working class.
Eventually Chou En Lai got irritated . He said
"There is something we have in common"
"We are both traitors to our class!"