well i am reading a book at the moment and my friend wanted to borrow it and when she gave it back i flicked through it to get to the page that i was up to and as i went passed chapter 10 i saw that the n on ten was turned to a s and the letters ticles was added so it spelled testicles and i asked my friend about it and said that someone else wrote that (witch is another friend by the name of stephanie) and i was wondering on how i could get it off without destroying the book