By now you've seen our boy Troye Sivan completely kill it on The Tonight Show Starring Jimmy Fallon last night. You probably also saw him get flipped by the program's other guest, wrestler John Cena. Did you stick around to watch JC's skit? It was freakin' hilarious.

Not only does John channel his inner child, he also belts out an emotive cover of Adele's "Hello," the world's saddest song and current Hot 100 chart-topper.

He, like, actually belts it out, gravelly voice and all. Listen to it above, then flip through our favorite covers of the tune and read up on why Troye Sivan's world takeover is right around the corner.