Quick Eye Exam...
This will blow your mind...!
Just do it - don't cheat!!!!!!!!!!!!
Try this its actually quite good.
But don't cheat!
Count the number of F's in the following text:
FINISHED FILES ARE THE
RESULT OF YEARS OF SCIENTIFIC
STUDY COMBINED WITH THE
EXPERIENCE OF YEARS
Scroll down only after you have counted them!
OK? How many?
Wrong, there are six - no joke!
I got this one, almost slipped though. I just like screwing with all your heads