The President and the First Lady sing 'Happy Birthday' Usher

OMG - this just happened! Usher was left speechless during a recent visit to the White House when President Barack Obama and First Lady Michelle Obama surprised him for his birthday.



The impromptu moment went down at a meet-and-greet in the Oval Office. The R&B singer, 37, was taken aback when a woman interrupted their conversation to give Flotus, 51, a candlelit cupcake in Usher's honor.
"Oh, look at that!" POTUS, 54, said before breaking out into song. "Happy birthday Usher, happy birthday to you! That's a good cupcake, too!"

 The newly married entertainer shared a video of the special sing-along on his Facebook page on Saturday, Oct. 17.