A frog in a coconut shellThe rhetoric of proverbs this means someone who is very knowledgeable and told. But actually, with knowledge or experience because of the narrow frame, do not go out to an external lokthat.
Little boxes idioms This insight. This means that they are very important. But then there are a narrow range. Little experience because I did not go out with the external world.
A frog in a well idioms proverbs. Refers to those important his knowledge. But I have knowledge in a narrow range Less experienced because it does not meet with the world outside.