Brian O'Driscoll struck double as he made a cheeky €525 off his country's rampant success in this year's Six Nations series.
The former Leinster man, who captained Ireland from 2003-2012, has revealed he placed a €150 bet that Ireland would win the Grand Slam 7/2 odds back on February 1st and made an impressive profit.
On Twitter, the ex-inside centre couldn't hide his delight at a double slice of Irish luck on St Paddy's Day and joked 'drinks on me!!' beneath a photo of his bet slip.
Ireland claimed the Six Nations 2018 with a game to spare against Scotland (28-8) at the Aviva Stadium last weekend and beat Eddie Jones' England 15-24 at Twickenham on St. Patrick's Day to seal a fantastic series for captain Rory Best's team.
A spokesperson for Paddy Power, who the bet was placed with, said: "The last time Ireland won the Grand Slam, BOD was the man lifting the trophy, so we are thrilled that he had a little flutter with Paddy Power.
"It’s clear he had huge confidence in the Irish squad rubbing England’s noses in it at Twickenham today, and we're delighted that he’s enjoying rubbing ours in it too after he took great pleasure in posting an image of his winning bet online."
Paddy Power paid out early on all bets placed on Ireland to win the Grand Slam and the Triple Crown on Friday – it appears O'Driscoll was as optimistic as the bookmakers.
Ireland claimed their first Grand Slam for over a decade this weekend, O'Driscoll who captained the side from 2003-2012, won the championship once as international skipper in 2009.
After Ireland's famous Paddy's Day win, the 39-year-old told ITV Sport: "It is great seeing these celebrations. It means so much. It is so, so difficult to win a Grand Slam.
"So hard to win five top quality games in a row and to come to Twickenham and do it is an amazing achievement. These are the moments you live for. These players should be very proud of themselves."