Illusion

[cmgreen]

http://www.eyetricks.com/scary_optical_illusion2.htm

[Col]

I worked that out, and still let out a little wee.
Good "illusion"

[savageman25]

:D:woot:
My sister got me with one of those a while back, it was a game where you couldnt touch the sides with the mouse cursor, then that face popped up.
Scared the living daylights out of me.