A man called his friend who he had not seen for quite a while, and asked him how he was doing and what he had been up to lately.
The friend replied that he had been working on the aqua thermal treatment of ceramic, glass, aluminium and steel under constant environmental constraint.
The man was so impressed that, to better understand, he asked him for more details to which the friend replied: “I am doing the dishes in very hot water, with my wife constantly looking over my shoulder.”