GEORGETOWN — Peyton "Peanut" Henderson, 11, practices dancing with his 9-year-old sister Mariesa in the space between the family living room and kitchen.
The two call it their "stage." A nearby TV screen is their mirror.
But it was Peyton dancing on his own as Mariesa looked on that made Peyton, a sixth-grader at Royal Spring Middle School, an Internet sensation.
The Henderson children's grandmother works in guest services at Rupp Arena, and each year Peyton attends the Sweet Sixteen boys' high school basketball tournament.
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Hearing Pharrell's Happy playing over the sound system on March 20, the boy stepped down the bleachers and into worldwide fame.
First, players and photographers around the court start to look around at the dancing child, dressed in sweatpants and a T-shirt.
Then people start to applaud as the solemn-faced kid pulls off a series of intricately choreographed moves, moving up and down the steps and ultimately shimmying to his knees.
Peyton was recorded by his aunt, Angie Holleran, who did not at first realize that the child causing the kerfuffle was her nephew.
Sean Newell at Vice.com raved about the performance, saying "Do not ever change one thing about yourself, Peyton. You are the best person I have ever seen on the Internet."
Mom site Whattheflicka.com gushed in a headline: "This kid is probably the best dancer of all time and we love him for it."
Peyton's mom started calling him "Peanut" after an early ultrasound, and it has been his nickname since. He has never studied dance, although he will occasionally dance for teammates on his elite baseball team.
Flying to Los Angeles for The Late, Late Show with James Corden soon will mark the first time he will ever have been on a plane; he is a little nervous about it.
Peyton wants to be a baseball player, not a dancer, when he grows up.
He explains his viral moment this way: "I just heard the song, and I just wanted to dance. ... I keep practicing, and I never forget the moves."
His parents, Heather and David Henderson, say they were pleased when Peyton's dancing drew a few thousand hits. Late Friday, when it had rocketed to more than 47 million views, the couple was busy simply fielding all Peyton's appearance offers and scheduling his TV interviews.
What he would really like, Peyton said, is to appear with talk hostess Ellen DeGeneres or on the Today Show.
"He's always kind of seemed that he feels the music in life," David Henderson said of his son.