There are 3 ladies on a flight. Suddenly the pilot informed them that there was a technical problem and the plane was going to crash into the sea. 
A Chinese lady quickly took her cosmetics set out and started to doll herself up.
A Malay lady beside her questioned her on her actions. The Chinese lady replied that if she looked beautiful, the guys coming to rescue survivors would usually save the pretty ladies first, on hearing this, the Malay lady started to put on all her jewelry.
An Indian woman sitting beside the Malay lady was curious and questioned her.
The Malay lady said that the rescuers would save her because she would easily be identified by the glitter of her jewels.
Then the Indian woman started taking her clothes off.
Both the Chinese and Malay ladies were shocked and questioned her. The Indian woman then replied that rescue teams do not usually look for survivors. They usually look for the "Black Box" first.
(Courtesy of a forwarded mail from Magdalene Lim)