How she even thought of this, we don't know.
With Irish fans on tentherhooks as the boys in green take on Argentina in the Rugby World Cup quarter-final, one fan in the crowd was showing her support in style.
As Ireland won a scrum midway through the first half, the camera flashed to one woman in the crowd who was showing off her roots with a tin whistle in hand.
While we’re not sure the players were able to hear her, we absolutely love the randomness of it all.
Who thinks to bring a tin whistle to a rugby match? #Legend
