Usually our 'prank' calls involve kids on the phone saying someone is being kidnapped or robbed. We usually don't get prank calls on 911 as this is a serious offense and you can be arrested (and the calls are traced). As I previously mentioned, most people *think* they have an emergency so you really can't do anything to them (emergency or not).
I think the biggest abuse of the system is to get even with ex-boyfriends (women seem to do this more than men). They will call on the non-emergency line and their boyfriend has been kidnapped and that they know who took him and where he is being held. Unfortunately, its an ex-girlfriend getting even so the guy hasn't been kidnapped and is having a.....lets say 'nice evening' with his newest love.
We also get a lot of people that are off their meds. I took a call the other night from a lady who said her girlfriend had been kidnapped and knew where she was at. Things like this, the truth generally comes out. The more I started talking to this woman, I learned that her friend had alledgedly been drugged and kidnapped......by aliens dressed as people. After they do their testing on her, she was going to be sent to Vietnam. In Vietnam, the aliens had made her a POW and she had escaped...they finally caught up with her and were taking her back to Vietnam....
I'm sure you get the idea