Sgt. Pepper's Lonely Hearts Club Band is a very good record none the less, maybe even great, but it aint Mozart.
Usually name checked by people who know little about music and even less about The Beatles.
Paul: "Let's go back to the flat but let's listen to Revolver"
2.) When an album is considered the greatest in it's genre.
"You have to buy 'What's Going On?'. It's the Sgt. Peppers of soul albums."
2) Conforming with a majority of people's opinion about something being the "greatest of all time" when you might not fully understand why.
Person #1: DUDE! Snickers is the greatest candy bar of all time.
Person #2: That's strange. I could have swore the other day you said Kit Kat was the greatest candy bar. What made you change your mind?
Person #1: Well, I read a Rolling Stone article listing the 500 greatest candy bars of all time. They placed Snickers as number one. OMG SNICKERS IS THE BEST BECAUSE THEY SAID IT WAS. NOW I THINK IT'S THE BEST TOO
Person #2: Oh God, you're suffering a bad case of Sgt. Pepper's Lonely Hearts Club Band.