Actually, it started when Grohl asked the boy onstage and if he played guitar. When the kid said “yes,” Grohl immediately inquired about what songs he knew. The boy timidly replied, “I know a lot of Metallica songs.” Before Grohl knew what was going on, the boy was off to the races playing the song. As the 49-year-old rocker threw his hands up in the air, the rest of the Foo Fighters started to get in on the jam. As it becomes evident that the 10-year-old knows enough of the song to keep things going, Grohl began doing his best James Hetfield impression and singing. Eventually, the kid started playing another Metallica song and, Grohl, in ultimate cool guy fashion, noted that the tour was close to completion and he may as well give the guitar to the young boy. As the boy walked off the stage and back to his mother, Grohl quipped that he better not “see that shit on eBay next week.”
