This year, the Invictus Games—an athletic event for wounded service people that Prince Harry launched in 2014—are coming to Florida. That's in the U.S., where President Obama and First Lady Michelle reign supreme. To let the prince know she's not threatened by the British monarch stepping on her turf, the First Lady sent Harry a message over social media.  

Hey, @KensingtonRoyal. Are you ready for @InvictusOrlando? Game on.

A post shared by Michelle Obama (archived) (@michelleobama44) on

Slick, right?