Taylor Swift isn't taking Dave Grohl's comment about her "Eras" tour too kindly -- and she took the first possible opportunity to fire back, declaring she and her band do, indeed, perform live!
ICYMI ... the Foo Fighters frontman appeared to make a dig at the pop star Saturday, joking his band's tour is called the "Errors Tour" as they "actually play live" ... seeming to imply Taylor does not.
Well, less than a day after that perceived dig, Taylor appeared to directly respond to Dave during night 3 of her Wembley Stadium residency .