WATCH: Shane Horgan springs Haka on unsuspecting Irish shoppers

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

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.