"When I was little my Dad told me the big cooling towers that are often found beside electricity generating plants were in fact cloud machines and the prime minister of the day had a switch on his desk to turn the big machine on when it got too hot.

This made complete sense to me as they did produce big clouds of white cumulus-like exhaust when operating.

Fast forward to when I was around 11 years ago and the teacher asks if anyone knows why some days are dry and some days it rains, some days have blue sky and some days have clouds.

Of course at the mention of clouds I knew immediately where clouds come from and stuck my hand up to tell everyone about the prime minister and the cloud machines.

Luckily the teacher picked someone else for the answer and I was most confused to hear someone go on about evaporation and rainfall and so on."