All in the spirit of the iconic challenge, nothing nasty ... no harm done, you might think.
But, in a remarkable show of officialdom, the referee penalised them and, instead of the match starting with a kick-off, it started with a penalty kick for Stratford from the centre spot.
Has a game ever begun in such a fashion? It certainly had the rugby nerds scratching their heads.
To concede a penalty, you have to have breached the rules of the game. Nothing in the rulebook about the haka.
And surely it is impossible to award a penalty when the match hasn't even started.
There has been plenty of haka hi-jinks over the years. Teams marching menacingly toward the Maori challenge, some even getting face-to-face, close enough to hongi; others have simply turned their backs on it.
At one point things got sufficiently out of hand that the arbiters of international rugby drew up some protocols for what is termed "any cultural ceremony and/or team challenge" - the word "haka" does not appear in any sub-section of the regulations.
So, for the benefit of the Lions (and the players from Rangitikei College), those performing the challenge must not cross their 10-metre line, and neither must the team on the receiving end cross theirs.