[glennaro]

I use one of Tom Mabe’s techniques: “911 what is your emergency?” It they hesitate or attempt to respond, repeat your words with a bit more force. If they still don’t hang up, remind them: “Be advised that crank-calling 911 is a serious crime. Now, what is your emergency? We already have your location.”

[Nateman]

...I use one of Tom Mabe’s techniques...

Have you heard this Tom Mabe call? It is one of the funniest things I've ever heard on the Internet.