Watch Jimmy Fallon, Justin Timberlake Do Beyoncé's 'Single Ladies' Dance, Steal the Show at the U.S. Open With Their Flawless Celebrity Friendship

“@TheCauldron: pic.twitter.com/pppBfLhY1y” Seriously my favorite celebrity friendship.

— Courtney Meadors (@court_meadors) September 10, 2015

Unfortunately not captured below: The moment immediately after this, when Justin leaned over to Jimmy and channeled his greatest Alan, whispering, "And we're the two best friends that anybody could have. We're the
two best friends that anyone could have. We're the two best friends that anyone could have. And we'll never, ever, ever, ever, ever leave each other."

Here's Jimmy Fallon & Justin Timberlake dancing in the stands to Beyonce on the arena screen pic.twitter.com/c1uGWRkEJZ

— The Cauldron (@TheCauldron) September 10, 2015

Such best friends that they also did "History of Hip-Hop 6" on The Tonight Show. (They should probably just go ahead and make their own dance show already.) Wednesday was a big day for this duo: