Why Is It Saying, 'That Was Easy'?

Security guard #1 rushing in: Where is the panic button?
Sales girl: I don't even know what that is.
Security guard #1: It's not under the counter? You don't have a panic button? How can you not have a panic button?
Security guard #2: I think this is it. Here, on the wall behind you.
Security guard #1: Okay, okay. Okay, let's press it and see if it works.

--Pierpont Morgan Museum Gift Shop

Overheard by: not-panicking