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The White House and Kensington Palace are challenging each other fiercely over the upcoming Invictus Games.

The Invictus Games games are a papalympic-style sporting event created by Prince Harry for wounded, injured and sick armed services personnel.

On Friday morning, Michelle Obama sent a tweet to Prince Harry challenging him at the games.

“Hey Prince Harry, remember when you told us to bring it at the Invictus Games?” The First Lady asks, standing next to President Obama.

“Careful what you wish for,” the President adds.

The pair are standing in front of American service men and woman who conclude the video saying “Boom.”

Prince Harry responded perfectly, tweeting a video response to the First Lady with the help of his cheeky grandmother.

The video shows Prince Harry telling his grandmother, Queen Elizabeth, about the Invictus Games. His phone buzzes with a ‘text’ from Michelle Obama. In the text is the video.

He shows it to the Queen who responds with a dismissive, “Oh really? Please.”

Prince Harry ends the video perfectly with “Boom.”