This term means that it would make you very clueless and ignorant of the subject you are asking, if you ask a few questions, and this in turn would make you more knowledgeable, and a greater insight into it, making you more smarter. But, if you don't ask any questions, there would be lots of buggering doubts in your brain that you can't find the answer to it, and you will never inquire about it, never try your best to find the answer, and you will be blind forever from the world outside, making you more like a fool to others.