A slippie mat combined with a tendency for a near empty Longbox to pitch nose up and slide back on TO combined with catching the edge of one of the mats combined with low sun at the end of a busy day - bugger indeed!
If I were Zyppie I'd apportion full blame on the Collingwood Footbal Club and their over exuberant use of Vaseline - as posted previously - both on and off the field. Buggery indeed