Don't believe it? Try opening up the image in Paint or another image editor and put the 2 tiles side by side.
Girl Illusion - Do You Have a Dirty Mind?
If you move away from the center you can see the circle start to move.
There is only 3 Colors in this picture.
The table tops are actually the same exact size! Cool illusion that you can try yourself.
These lines are actually parallel even though they appear to curve.