Joke
A blonde decides that she would like to learn how fly a helicopter. Turns up to the airport and asks instructor to teach her how to fly one.
Blonde sits next to instructor taking in all of the buttons and how to start it and then instructor takes helicopter up to a 100 feet and back down
After doing this for a couple of times he turns to blonde and says you can now take off yourself and jumps out of helicopter and tells blonde to take helicopter up to a 1000 feet.
5 mins later he hears an almighty crash runs out on to tarmac pulls blonde out of helicopter and asks what happened?
Blonde replies I did what you said but when I got to 1000 feet I got cold so I turned the fan off!