That's when I saw you, really saw you for the first time. I didn't intend to look at you, it just happened. It was like those pictures, you know, those optical illusions. You can gaze at them forever and see only one thing. Then when you relax your eyes for just a moment, another picture magically appears. The funny thing with that kind of visual trick it that it's really hard to go back to seeing the original picture once you've seen the new one.
Kimberly Sabatini, Touching the Surface
illusion