Photobombing. I know you have seen it and I bet some of you have done it.
To photobomb is hop into a picture right before it is taken. This is usually done as a prank, and takes the focus (no pun intended) away from the main subject.
Photobombing (or is it videobombing) is also seen when a television newscaster is on location. Some one jumps, yells, makes faces, etc. as he is trying to do a serious report.
Professional athletes do this to teammates during interviews quite frequently.
Do you have any funny stories of when you photobombed or were photobombed?