Engine

I am a very nervous flyer. During a trip from California to Indiana, it didn't help that my connecting flight from Denver was delayed twice because of mechanical problems. Then, after we were aloft, I noticed the lights began flickering. I mentioned this to a flight attendant. "I'll take care of it," she said. Moments later the lights went out. Clearly she'd solved the problem by turning off the lights.
A passenger across the aisle who had been listening leaned over and said, "Whatever you do, please don't ask about the engines."

~LoN3Ly M3~