It all started when Stephen Murphy, 13, decided to take up a plum position next to the team bus when he and his father went to Dublin Airport to welcome his heroes home.
As with any young fan, he was hoping to get his hands on an autograph or, preferably, a souvenir from one of the team.
What he got was much more than that — the medal of Leinster star Jordi Murphy.
Stephen’s dad, Kieran, said that he was just as excited as his son when they realised that they had been inadvertently handed a winner’s medal.
“He went up to Jordi who was getting on the bus.
“Jordi looked at him and recognised him from other events and he said: ‘Ah God, you again’ and Stephen said: ‘Jordi, would you have anything for me?’.
“In fairness to Jordi, he was brilliant; he opened his kit bag and he took out a training jersey, so you can imagine the young lad’s delight.
“So we were just getting into the car and he put the jersey on and he said: ‘Dad, I think there is money in the pocket’.
“So he reached into the pocket and there was the gold RBS Six Nations medal.
“It was fantastic, the excitement.
“You can imagine the young lad, even for a father, to be standing there with the medal in his hand,” he told Newstalk.
After failing to get confirmation that the team were travelling to the Four Seasons Hotel to celebrate their championship victory, Stephen decided that his granny needed to not only see the medal, but get the chance to wear it around her neck — a privilege afforded few Irish people.
“So Stephen said, ‘I’d love to take a picture of Nana with the medal around her neck’.
“Nana lives in Glasnevin so we went along to Nana,” Kieran continued.
“She is only out of hospital and she is 84 and she loves the rugby.
“She is always tuned into the Irish games.
“So we went down and we took a picture with it around her neck and that’s worth a million dollars,” explained Kieran.
After having their fun, Stephen and Kieran went to the Four Seasons and were delighted to return the medal to Jordi in person — even though the man himself hadn’t even realised he had given it away.
“We went in and Jordi was so thrilled to get his medal back.
“He hadn’t realised it was gone but he was thrilled,” said Kieran.
“So he wanted to take a picture on his phone of Stephen and himself, which he did, and in fairness to him he put it up on Twitter.”