Ah Beng registered for  helicopter lessons. After several lessons,  the instructor allowed him to take the helicopter up on his own.  All of sudden there was a loud crash and Ah Beng barely made it out of the crash. After his recovery, his instructor asked him, “Ah Beng, what happened to the helicopter  I was certain you could fly it. Was there engine trouble ?”

Ah Beng replied, “No , the helicopter was fine. But then it became very cold so I switched off the fan lah ”.