Here are my greatest hits.
1. In high school throwing a cup full of pennys out the second floor, wait 10 seconds for the freshmen to arrive, then douse them with a trashcan full of water.
2. Call random girls in the dorm, and say that I am calling them because their number was on the wall at a sleazy bar restroom.
3. Call forward a dial prayer call to a co-worker
4. Call a alocholic friend, then identifying myself as a substance abuse counselor, wanting to set them up for an appointment, .... and they showed up.
5. Broke my kid of chewing on pencils several years ago by telling him he could get lead poisoning. Then have him look up the symptoms of lead poisoning , then watch him freak out.
6. Tell telemarketers to hold because someone is at the door. I once had one hold for over an hour.
7. Made calls IDing myself as dorm maintenance doing a survery of dorm conditons. Made them open every drawer, work every device, open every window, etc. etc.
I once got Sandy from the Boston Globe to stop calling me for a subscription by asking her (in a rough voice) what she was wearing.
The scream and click on the other end was very satisfying.