What is a stereogram?
Uhm... I don't know how to explain it. But if you've ever seen one of those Magic Eye books, those are stereograms. Basically, it's an image which, if you look at it a certain way, will show you a hidden image.
I found this online stereogram generator and that's how I made the image above. Can you see what's hidden in it? =P
The trick is to allow your eyes to focus behind the image, or in front of it. I prefer the former because I find the latter more uncomfortable because I'd have to make myself cross-eyed. Focusing behind the image is more like allowing yourself to daydream. Lol! =P
So, have you tried it? =P What image did you see? Let me know by commenting anywhere on the blog here, or anywhere you can find me! =P