Her Majesty The Queen proved she is in fact the Queen of the comeback after her cutting reaction to big talk from the Obamas, ahead of the Invictus Games. The President and First Lady Michelle made the mistake of laying down the gauntlet for Prince Harry as they posted a cheeky video, challenging the British team who are set to participate in the five-day sporting event to be held in Orlando, Florida from May 8.

In the video the couple, who recently met Prince Harry along with the Duke and Duchess of Cambridge for a private dinner at Kensington Palace, looked like they meant business. Facing the camera Michelle says: "Hey Prince Harry. Remember when you told us to bring it at the Invictus Games?"

"Be careful what you wish for," Obama warns, in a mock threat, as one of the US troops pulling faces in the background hollers a feeble "boom", as if to underline the message.

The playful spat continued on social media, with Harry tweeting from the official Kensington Palace account: 'Wow @FLOTUS and @POTUS, some @weareinvictus fighting talk there! You can dish it out, but can you take it? - H.'

Prince Harry
Prince Harry gets a little help from the Queen for a promotional video ahead of the Invictus GamesKensington Palace / Twitter

Clearly plotting more mischief he added: "@FLOTUS @POTUS How on Earth am I going to top that?' But the Prince of pranks was not going let that slide without a fitting riposte. In a comical promotional video for the games, with a little help from her Majesty, the young royal is seen chatting with his grandmother about last year's events, when he receives the text from FLOTUS.

Turning to the Queen he asks: 'Do you want to watch this together?' 'Let's have a look.'

Watching the video, the Queen, was clearly not amused. "Oh, really? Please!" she utters as an equally unimpressed Prince Harry turns to the camera mimicking the lame threat as he drops the mic. Posting the video on Twitter the Prince added: "Unfortunately for you @FLOTUS and @POTUS I wasn't alone when you sent me that video - H."

Of course it was all in good fun, as both nations teams join 500 participants from around the world in the eagerly anticipated sporting event founded by Harry in 2014 to support the recovery of servicemen and women who have suffered both physical and psychological injury whilst serving their country.

The official opening of the games will be marked with a fly-past with an appearance from Hollywood star Morgan Freeman.

Prince Harry's Invictus video
Prince Harry mocks the Obama's threat while the Queen is not amusedKensington Palace / Twitter

The Prince is due to travel to the US in May to support the UK team ahead of the Invictus Games where competitors from 15 nations will compete in 10 sports which vary from athletics to wheelchair rugby. The royal, who will be cheering on competitors along with Michelle Obama said he wanted the participants to have the opportunity to represent their country again as they 'go out and kick the a**e out of life'.

"These Games have shone a spotlight on the "unconquerable" character of service men and women and their families and their "Invictus" spirit," he said. "These Games have been about seeing guys sprinting for the finish line and then turning round to clap the last man in. They have been about teammates choosing to cross the line together, not wanting to come second, but not wanting the other guys to either. These Games have shown the very best of the human spirit.'

Win or lose its team spirit that counts in the sporting arena, but as the Queen demonstrated, the Americans can't beat the British sense of humour.

As the Queen and Prince Harry win round one, The President is yet to respond.