2. To jump in front of a camera as someone is taking a picture of someone/thing else. Worsks especially well on tourists in foreign cities.
Often causes frustration and annoyance to the victim(s) but great amusement to the perpetrator and thier peers.
"Dude! I can't believe it! I was taking a photo of my fellow tourist, Wing Shing Li, in front of Big Ben and someone Photojacked me! It was my last picture too!"