After jumping on stage the fan hugs Grohl and drummer Taylor Hawkins while being warned: “If you suck on the drums, I will personally tar and feather you’re a***, now get on those drums right now." Watch the clip below.
“I sure as hell hope this mother***** doesn’t suck," Grohl says into the mic. "Do you know Foo Fighter’s songs? No, we’re not playing that one.
"We got a song called Big Me, do you know that song? It’s the easiest one, if you f*** this one up you’re going to look like a total f***ing a**hole.”
Luckily, the chosen fan, whose name is Anthony, managed not to mess up and played a sterling rendition of the Foo Fighters classic track. According to the poster it was also his 18th birthday – has his adult life already peaked?
Grohl broke his leg last month, leading to the ex-Nirvana Sticksman having to cancel all Foo Fighter’s European dates, including a headline slot at Glastonbury.
He had previously posted photos of his broken leg which you can see below.