pic bomb
a pic bomb is the act of one messing up someone's picture by doing something to either draw everyone's attention thus ruining their focus or by running across when the picture is being snapped. Ex: throwing water across a wedding picture, including a white male in a black male photo, someone jumping across the front of the picture, someone making specific gestures in the background of a picture
When the fat guy jumped behind the girls when the picture was taken is a pic bomb.