Instruct: Classify Amazon reviews into positive or negative sentiment
Query: i want my money back.....

this book is a complete waste of money, though not too much time, as i only read the first 60 pages when i finally dumped it. if you are not a teenager, save your money. the story is so stupid, it reminds me of reading a kid's short story. i love time travel, but there is a lot of garbage out there, and this tops the list. unbelievable characters with no depth, the cell phone works in the year 1542, and the hero is supposed to be a sex expert who's sole job is pleasing all women? gag me with a spoon. this should come with suggested reading ages.