Many years ago, there was a high occurrence of helicopters crashing in Malaysia reported in the news.
The US government, therefore immediately, sent an expert to investigate. Following a pre-planned schedule, the American expert followed as co-pilot beside a pre-selected Malaysian pilot.
Everything went smoothly, the helicopter took off and ascended to the clear blue sky. The helicopter went up and up. The Malaysian pilot then started to behave strangely. He was shivering. Then suddenly, he switched off the ignition switch of engine. The American pilot immediately shouted, 'Mayday, mayday!' and furiously questioned the Malaysian pilot for his action.
The Malay pilot sneezed the words, 'Cold, cold...'