Warning- NYC pranks never quite work out. But here's the premise: You know how criminals in NYC will ask if you want them to take your picture, then they run off with your camera? What if I turned that around on people and asked someone to videotape me? Then I ran away, leaving them awkwardly holding my camera?
I wish I had someone else to work a second camera on them. Naturally I tried this with my disposable camera in case they decided to walk off with it.