Dear Sarah,
I think you need to save your friend Rachel. She seems to have Cowell-itis. Yes. That's the technical name. She seems to have watched an episode of American Idol and in so doing she caught Simon's sub-conscious hand gesture illness.

Exhibit A

Exhibit B

If left untreated it may result in further complicated hand gestures such as:

Exhibit C

Please help her. As a friend.
Thank you.
M---