wife told him that he'd left the light on in the garden shed, which
she could see from the bedroom window. George opened the back door to
go turn off the light but saw that there were people in the shed
stealing things. He phoned the police, who asked "Is someone in your
house?" and he said no. Then they said that all patrols were busy,
and that he should simply lock his door and an officer would be along
when available. George said "Okay," hung up, counted to 30, and
phoned the police again.
"Hello, I just called you a few seconds ago because there were people
in my shed. Well, you don't have to worry about them now cause I've
just shot them all." Then he hung up.
Within five minutes three police cars, an Armed Response unit, and an
ambulance showed up at the Phillips residence. Of course, the police
caught the burglars red-handed. One of the policemen said to George:
"I thought you said that you'd shot them!"
George said, "I thought you said there was nobody available!"

(Supposedly a true story, but I couldn't confirm it...)