Watch the strength of a paper today. Now you will realize paper is not only come into use to write on or to wipe your @ss, it can even cut the @ss of many objects.
Watch this video of Mr. Hacker, he took the normal paper and cut it into the round shape and attached it with an angle grinder and then he cut several hard objects with it and demonstrated the power of a normal paper.
So, be careful next time when you use the paper. You never know when it will turn on you.