Elevator does not go to the top floor
The person is not that smart, and probably won't get the joke.
America: Some people say my elevator go to the top floor but I don't even have an elevator.
Italy: I've heard that one too, let's go out and buy one!
or
X: Hey your Elevator does not go to the top floor.
Y: What?
Italy: I've heard that one too, let's go out and buy one!
or
X: Hey your Elevator does not go to the top floor.
Y: What?