The perfect inverse of the traditional photo bomb in which the bomber is making a face in response to something or someone in the frame. The difference is that in the Reverse Photo Bomb, the bomber takes the traditional position of the intended target of the photo bomb (usually in the foreground of the photo).
What makes the Reverse Photo Bomb so difficult is that it requires even more precise timing than just diving in the background of someone else's picture. In the RPB, a stranger is in the background of the photo, effectively "bombing" the unaware bomber. It is essential that the stranger remains completely unaware of the events.
The Reverse Photo Bomb awards a promotion to the person taking the photo, and deducts a maximum of five points off the bomber, who is the ultimate victim of the process.
Holy shit, did you check out Erin's facebook? She just posted a photo of her holding a "Giant Cock" wine bottle at Wal-Mart, and there's this fat chick in the background bending over the salami counter wearing a short skirt.
Fucking Reverse Photo Bomb! Mark it down, Erin loses 5 points and Jess gets the badge "Reverse Photo Bomb Run". Nice! Who's in the lead now?