The next time someone from your office prints out a document that is greater than 50 pages make sure that you pick up the stack from the printer and deliver the document to their desk. No, you are not being kind to them, you are going to be executing a mean office prank. You are going to start rearranging pages from the document so they will have to sort out the mess. Begin the rearranging on the walk to their desk and make sure they see you taking pages from the middle of the stack to place them on top as if you were shuffling cards. Hopefully they were printing the pages out for a big meeting that they are already late to.