“It may be said with a degree of assurance that not everything
that meets the eye is as it appears.” ― Rod Serling
Two photographs of my eye (one open, one closed) printed onto glow-in-the-dark photo paper, charged up with a light, photographed again in the dark, and combined into an animated gif. I’ve always been a sucker for phosphorescence! 😉
SpiffyGIF 
Neat work! What’s a gif?
Thank you HSD! I really appreciate your sweet comments, you are so nice. 🙂
You also posed a VERY good question. GIF is short for Graphics Interchange Format, which is an image file type that allows for basic animations. Here are some funny examples: http://animated-gifs-funny.tumblr.com/ The gifs that I make are usually two or more photographs I’ve taken or frames from a video I’ve made which I have created individual layers for in an Adobe Photoshop file. Then I use Photoshop’s Animation palette to swap out the images (creating the illusion of motion), time them, and add some basic transitions. There are some free, no-Photoshop-required “gif makers” out there that you can try out if you’re interested, like this one: http://www.gifmaker.me/ It’s a lot of fun!