In my younger years I played a joke like this on the receptionist at the car dealer I worked at:
It was pretty darn mean, but I had her page over the P.A.: "Paging Mr. Highman, Mr. Buster Highman, your car is ready" you could hear her catch it and go "hey..!" just as she turned off her mic....that got every tech in the shop rolling, but the boss was not amused at all, nor was the receptionist...
Thankfully sexual harassment hadn't been invented yet...
