There are 5 F's in the sentence in blue writing.
If you counted 3, you are of average intelligence.
If you counted 4, you are above average.
If you counted 5, you can turn your nose up at anybody.
There's no catch. Many people forget the "of's". The human brain tends to see them as "V's" and not "F's".
THIS WILL ONLY WORK THE FIRST TIME YOU LOOK!