This one didn't happen to me. My manager and I were swapping crazies stories and he shared this one that happened to him during the afternoon shift.
A middle aged woman comes through the door and struts up to the desk.
Middle Aged Woman: Hello. I need you to call the police. There is a conspiracy (dramatic pause) for a kidnapping!
Manager: Uh oh. Well, you can use the pay phone to call 911 if you'd like.
Middle Aged Woman: (walks over to the phone and stares at it for a few minutes before coming back to the desk) I can't use that payphone, I need to use yours. (leans closer and whispers) That one is bugged!
Manager: Well, unfortunately all our hotel's phones are bugged. But I know for a fact that the phones at the convenience store across the street are completely bug free.
Middle Aged Woman: Oh! Thank you very much.
They must put the smarter guys on during the day.