A photo-pas is a photo of a person or people with a mess behind them. The background of the photo-pas displays filth, clutter, unmentionables, or busy things being presented. People often post these photo-pas pics on Facebook--inadvertently showing the world how dirty they are.
Sara took a picture of her children while they were eating dinner. The photo turned out to be a photo-pas because there were dishes piled in the sink, boxes of food on the counters, and a few black bags of trash in the background. To avoid a photo-pas photo takers should look around a room before taking the photo. What you see is what everyone else will see when they look at the photo--avoid the photo-pas.