Check out the following exercise, guaranteed to freak you out.
There's no trick or surprise. Really ... I mean that!

Just follow these instructions, and answer the questions one at a time and as quickly as you can! Again, as quickly as you can but don't advance until you've done each of them... really.
Now, ARROW down (but not too fast, you might miss something).........





What is:
1+5












2+4












3+3












4+2












5+1
















Now repeat saying the number 6 to yourself as fast as you can for 5 seconds. then scroll down.





























QUICK!!! THINK OF A VEGETABLE! Then arrow down.






















Keep going.
























You're thinking of a carrot right?


If not, you're among the 2% of the population whose minds are warped enough to think of something else. 98% of people will answer with carrot when given this exercise.

Freaky, huh?