Who is "Jack Flash"? His name is Jack Dyer, and he was Keith Richards' gardener. Richards explained to Rolling Stone in 2010: "The lyrics came from a gray dawn at Redlands. Mick and I had been up all night, it was raining outside, and there was the sound of these boots near the window, belonging to my gardener, Jack Dyer. It woke Mick up. He said, 'What's that?' I said, 'Oh, that's Jack. That's jumping Jack.' I started to work around the phrase on the guitar, which was in open tuning, singing the phrase 'Jumping Jack.' Mick said, 'Flash,' and suddenly we had this phrase with a great rhythm and ring to it."