Dave Grohl Responds to Nandi Bushell: 'I'm Down, BUT I'M NOT OUT'

The best "feud" of 2020 continues to rock on. In response to young British musician Nandi Bushell's "Rock and Grohl" song -- which in turn was her reply to his song for her, the "superhero theme" "Nandi" -- Dave Grohl issued on the Foo Fighters' social media, emphasizing (jokingly) that he's "down, but…