Well done Grasshopper

I am looking for the origin of the phrase, 'Well done Grasshopper'.

I think it might have its origins in a television series that was shown in the British Isles in the early 1970s (presumably a bit earlier in its native US) called 'Kung Fu'. It was the story of a trainee monk/warrior, played by David Carradine, whose 'Kung Fu' name was 'Grasshopper'. His teacher (a blind monk) would say things like 'Well done, Grasshopper'.

It was not one of the greatest pieces of television ever made.

DFG

David, you're doubtless correct in your put-down of Kung Fu. But in that great wasteland in cyberspace we call television, the series was far from the worst at that time, and perhaps any time since. And David Carradine was an icon to a large number of fans. I know, as my wife was one of those fans, and she owns the remote.
SS