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YouTuber JasonMoments has released a video of the moment he discovered that his British girlfriend Amber Doig-Thorne had staked £5,000 ($6,462) on Floyd Mayweather to win Saturday's fight as a 'prank'.
Jason was convinced Conor McGregor was going to win the fight, so his other half decided to wind him up using his credit card.
Watch how it unfolded here:
In the video, he replies: "For real, did you actually do this?"
He then opens his laptop and double checks the credit card numbers match with the one on the bookie's website.
But Amber Doig-Thorne just keeps on laughing and shouting, "It's non-refundable".
"We love you Floyd," she chants as he bolts out of the house, slamming the door behind him.
However, it seems he's chilled out a bit about the whole thing, as he commented on the footage saying: "I just won $8,500 (£6,576)."
Watch the full video on YouTube here:
And Jason wasn't the only one who was quids in thanks to the fight. Despite losing, BBC Sport reports that McGregor will make an estimated $100 million (£77.5m) for the time he spent between the ropes, which equals out at roughly $3m (£2.3m) a minute.
The Irishman also managed to piss all over theories that he wouldn't be able to land a single punch, landing 111 punches on Mayweather.
Speaking about his competitor after the fight, Mayweather said: "He is a tough competitor and I thought we gave the fans what they wanted to see.
"He is a lot better than I thought he was, he used different angles and was a tough competitor but I was the better man tonight.
"Our game-plan was to take our time, let him shoot all his heavy shots early on and then take him down at the end, down the stretch.
"We know in the MMA he fights 25 minutes real hard and after that he starts to slow down. I guaranteed this fight wouldn't go the distance. A win is a win."
The record-breaking fighter later declared the bout his last ever fight, officially retiring with a record of 50-0.
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