So I started explaining as best I could. I got as far as "Helter Skelter in a summer swelter, the birds flew off of the fallout shelter". We covered roller coasters, the Beatles, a kid-friendly version of the Manson murders, and a brief discussion of the zeitgeist of nuclear fear following WWII. I was about to get into Bob Dylan and the Byrds ("eight miles high and falling fast") when my kid decided he had enough of a history lesson, and wandered off to do other 8-year-old things. To be fair, that was probably about 20 minutes in, and absolutely much more of an investment into the story than the kid even thought possible at the time. So it goes, so it goes.