Think for a second about those guys in the moment of that picture shot: They know that their fully recognizable faces are now banned together with their exposed small dicks in a picture and this will cruise around the internet for a lifetime and beyond! What an unpleasantly akward moment of full vulnerability and embarrassment for any grown up and as such proud man. Even worse if they have been pushed into this by some other/bigger guys some late night when drunk.
Some guys might be perfectly comfortable with their small dick life situations going out in public (those men are truely adorable and strong) but when one is not you can often see it with that certain insecurity, fear or intimidation in their faces. Those pure and innocent eyes combined with sometimes young and fearful faces are such hot precum drivers!!