Here’s another submission I overlooked back in 2008. This one was sent in by Andrew Griffiths, who has seen this type of illusion hundreds of times around the net, but never in real life! I, myself couldn’t think of a better example to showcase, than a regular place I visit – a toilet! Remember when doing our duty, most of the time we let our thoughts slip by, and before you know it – illusions start appearing in front of our eyes! The thing is… do you see all those gray spots appearing at the white intersections below? They aren’t really there (just so that you know)…
