"I thought what I'd do was, I'd pretend I was one of those deaf-mutes" ~Holden  Caulfield

Though it first appeared in A Catcher in the Rye it was made famous by the anime Ghost in the Shell. The book A Catcher in the Rye has an intersting history. Some psycho killers are sometimes found with it on their person. Above is the laughing man.

"That's the difference between me and the rest of the world! Happiness isn't good enough for me! I demand euphoria!!" ~Calvin

Taken from the comic Calvin and Hobbes by Bill Watterson.