Japanese Toilet Paper Horror

Lucky Koji Suzuki is the Japanese author of a 9-chapter novella to be printed on toilet paper rolls.  The story takes up approximately 3 feet of toilet paper and allows readers to enjoy their fill of horror from the comfort of their toilets which may in fact turn out to be the best place for them to be in case the little story scares the **** out of them.  But what happens if you’re in the middle of the story and you stop and then a friend comes over and uses up a couple of chapters?  Also, how do you bookmark your place?  Or do you even have to?  I might buy this for a Halloween joke.  But then all my party guests might spend the entire evening in the bathroom which would be pretty weird.