some help need ..... about collingwood and pointing the bone incident..

Hi All

I vaguely remember that there was an incident there as an
something about a collingwood and a some one pointing the
bone at the club,  back in the late 80's or early 90's and there
 was a reversal. I am trying to dig up some trivia, on clubs supersitions
curses and results (world wide.)
I'm not sure if it was collingwood (but I'm sure it was)...
Any help would be appreciated..

Thanks in advance...
David