WATCH: Russell Brand's Olympic closing ceremony performance
The UK comedian, who isn't known for his musical ability, led an entire singing segment by megaphone! Starting out with a song from Willy Wonka and the Chocolate Factory, the tight-trousered star was joined by a bunch of girating hippie chicks for a rendition of the Beatles hit 'I Am the Walrus'.
"Since when did Russell Brand sing and who even invited him to the Olympics?" tweeted one viewer.
"I think it's all clear that Russell Brand was definitely the highlight of the closing ceremony #hecanwillymywonkaanyday," tweeted a seemingly impressed fan.
Even Salman Rushdie weighed in. Yes, Salman Rushdie!
In a later act, viewers did a double take at UK singer Jessie J looking remarkably similar to Russell's ex-wife Katy Perry.
Sporting Katy-style long wavy locks, Jessie J even rocked the US singer's trademark nude body suit twice!