The 'Home' singer's little boy is set to undergo treatment for liver cancer.
WATCH! Prince Harry and The Queen Give Obamas Sassy Fight Talk In EPIC Twitter Exchange.
The young royal made the ultimate tag team with his nan as Britain gears up to go head-to-head with America at the Invictus Games....
Prince Harry, 31, has become a viral sensation after teaming up with his 90-year-old grandmother, The Queen, to deliver a sassy new promo for the upcoming Invictus Games, and it's literally what dreams are made of!
You know that moment you get into a bit of a scrap, and you have to call on your family for back up?
Well, that's kind of what's happened here!
The genius Twitter video exchange sees Barack and Michelle standing with a crew of national servicemen as the First Lady says provocatively: "Hey Prince Harry! Remember when you told us to bring it at the Invictus Games?"
Barack then chimes in: "Careful what you wish for!"
Hilariously, the servicemen in the background say "BOOM!" before pulling a series of faces at the camera.
Well, Harry didn't take this lightly as he seemingly appeared to takeover the Kensington Palace official Twitter to give a number of sassy replies.
Fortunately for the young royal, he'd already enlisted the help of his nan, who was on hand to engage in some serious smack talk!
In typical royal fashion, The Queen scoffs at the Obamas' intimidation tactics muttering, "Oh please!" before Harry mockingly adds "BOOM!"
We can't lie, this has be the funniest royal video since The Queen's famous Bond cameo during the 2012 Olympics.
The UK is set to battle it out with the US when Harry takes his Invictus Games to America next month.
The royal will arrive in Florida on May 5th, to spend a week supporting the British team in the Paralympic-style event being held this year in Orlando.
Judging by the fight talk, it's going to be a fierce showdown!
The star headed straight from the jungle to panto...but clearly hadn't had time to learn her lines!