When you say ‘Elvis Has Left the Building’ you mean that the show is over and it’s time to go home.
Example of use: “Get you coat; Elvis has left the building!”
Interesting fact about Elvis Has Left the Building
The phrase ‘Elvis has left the building’ originated in 1956, when Horace Logan, announcer at the Louisiana Hayride Show, used the expression to encourage a crowd of teens to stay seated for the next performance. Later, it was used to encourage Elvis concertgoers to leave the venue.
