A pun calls the meaning of a word into question, and it upsets us tremendously. We laugh because suddenly we find out we're not going to get killed. I think a lot of things work that way with photographs.
Garry WinograndYou have a lifetime to learn technique. But I can teach you what is more important than technique, how to see; learn that and all you have to do afterwards is press the shutter.
Garry Winogrand