the width of the internet

there are moments in life when i feel mathematically challenged. which is a rather common state for a person who puports to be a physics student. but i am not talking about being mathematically challenged while trying to balance my expenses at the end of the month(that is a hopeless task, somewhat on the scale of enforcing peace in certain parts of the world where people try to enforce peace, or like explaining the concept of "work culture" to certain members of that class of parasites known as "homo politicianus" back home), but while thinking about random problem which crop up in life. take this statement made by a friend of mine(name avik). sorry statements: "you can navigate from anysite on the internet to any other by just twelve clicks and you can navigate from any site to a porn site in six clicks". now how do i check the veracity of these statements. one must, you do realise, i hope. there are quite a few interesting phds in network theory here, if one is interested. and if one is willing to risk the possibility of total insanity as a result of trying to check these statements, the experiments themselves should be interesting indeed. and when one got bored, one could write a simple code to start at a designated website and automatically click at random points and then trace the navigation history. should be good work. i have copyright. any filially challenged individuals(read bastards) who steal my idea will suffer the consequences of being eternally cursed.