Two people head out into the woods, attack and immobilizes a moose, then proceed to tag-team copulate with the creature while sawing off its antlers. The two each hold an end of the antlers and wrassle with it on the moose's back, still coupled with the creature; they compete to force a bottle of maple syrup off the moose's back, to one side or another. The winner receives the Stanley Cup, or a reasonable facsimile if the Hockey Hall of Fame in Toronto cannot be reached, and the right to use the syrup, antlers, restraints, and Cup on the loser in any way they see fit. The loser receives the right to several hours-long hypnotherapy sessions to remove the memory of the entire event from their mind, ensuring it will resurface again and again in the victim's subconscious, rising to pillage the mind like a psychological Godzilla only to return to mysterious dormancy just as suddenly, thus providing an explanation for much of Canada's History.
Oh, so Harper lost a game of Canada's History? That explains quite a bit.