Okay kiddo, imagine Elvis Presley was a really big singer a long time ago, and he sang a lot of really popular songs that people loved to listen to. And when people loved a song a lot, they would buy a special shiny circle called a “record” to listen to it over and over again.
Elvis was so good at making people happy with his music that a lot of people bought his records. In fact, 50 million people liked him so much that they bought his records!
And later, someone put together a special collection of some of Elvis’ most popular songs and called it “Elvis’ Gold Records, Volume 2”. Gold records means that the record was very popular and sold a lot, so they gave it a special shiny gold cover to celebrate it.
So when people say “50,000,000 Elvis Fans Can't Be Wrong”, they mean that if so many people liked Elvis and bought his records, there must be something really good about his music!