"Cadets, write down: "the temperature of boiling water is 90°." One of the privates replies, "Sergeant, you're mistaken – it's 100°!" The sergeant consults his handbook, and then announces, "Right, 100°. It is the right angle that boils at 90°."
Interesting fuct: we have strange neighbours who love to build small strange houses. They have built already 7 small strange houses. We're lucky there is one more neighbour between us.