WATCH: Shane Horgan springs Haka on unsuspecting Irish shoppers

Some Irish shoppers had a Haka sprung on them recently, before Shane Horgan asked them to copy the war dance for a chance to win a trip to the Rugby world Cup.

In a new ad for Heineken, the former Ireland and Leinster player spoke to some unsuspecting shoppers as a trio of Maoris appeared before them in the aisles.

Horgan then invited them to perform their own version of the traditional war dance, with hilarious results.

Fair play to everyone who got stuck in with a war dance of their own.

A particular shout out to the older lady who gave it her best shot despite walking with a crutch; in our opinion very hard done by not to make the final two.