Ask any one and they wouldn't mind confessing to the fact that they have at least once in their life pried on someone else and taken a photo of them without letting them know. Well, what's the worst that can happen in this scenario? We feel that the worst that can happen while you take a picture of someone else secretly is your phone flashing.
This girl over here experienced the same fail when she was taking a picture of a hot guy at her workplace. Her flash was left on and the guy definitely noticed her. She didn't stop with the pictures though and kept her snapchat friends aware of the abort mission and the dash that followed her accidental fail while taking a picture of a hot guy silently sitting at her workplace.