When I was a kid and not yet growed up, I saw an Elvis movie where he explained to a little girl how to fly helicopters.
"If you can rub your tummy, tap your head, and poke your tongue out at the same time then you can fly a helicopter"
So I tried it and found out I was pretty good at it.
Anyone who has flown a C152 on a calm day would know that the less you interfere with the controls the smoother it flies. With a helicopter if you stop rubbing your tummy or stop tapping your head or stop poking your tongue out then it all quickly goes to pooh.