“It’s My 50th,” the sign read. “Let’s Have A Beer.” Grohl invited the birthday boy, whose name is Griffin, to join him onstage. “I know it’s your 50th birthday,” Grohl said.

Dave Grohl invited a fan onstage to share a beer as the man attended a Foo Fighters gig on his 50th birthday. Foo Fighters were playing a show in Clarkston, Michigan on Monday night (August 24 ...