Flashes and Noise

My Mommy was out in a restaurant and she came home asking me a few questions, so I feel it is my obligation to answer them. She wants to know why cameras are accompanied by noise. I told her, Mommy it's simple using the camera in the restaurant accompanied with a flash doesn't gather enough attention, so the people must accompany by it a loud laugh of some sorts. I don't need to hear and see this sad skeptical when I am dining. And then they will go home and post it on Facebooks for more attention. Cameras in public just make me sad.