Riddle: Say “silk” five times. Now, spell “silk.” What do cows drink?
This one just messes up with your brain. It canalizes you to think in a certain way. Saying “silk” five times makes you think of “milk” instead of “water” since “milk” rhymes with “silk”. Our brains tend to match seemingly irrelevant pieces of information just because they rhyme our sound similar.
This matching-up process can be useful sometimes if the pieces of information are relevant. But in this case, it is not. It is just a way to trick you and give the wrong answer.
Answer: Cows drink water. If you said “milk,” Your brain is obviously over-stressed and may even overheat. It may be that you need to content yourself with reading something more appropriate such as “Children’s World.” Just Kidding.