Bend Zee Knees!

The above rendition came from the TV series "To The Manor Born", where the echo of the accent of a European skiing coach placed it in the quotable archives for ever more. But the following quote shows it has wider support still:

I came across this comment by (US humorist) Dave Barry. He was writing about snowboarding, but I think his words translate perfectly for skaters.
"'Keep your knees bent!' my friend Brad would yell, helpfully.
Have you noticed that whatever sport you're trying to learn, some earnest person is always telling you to keep your knees bent?