Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: my humble opinion:

This book is a lot of fun. I was worried that the price aspect would take away from my enjoyment but it didn't. My boyfriend and I were cracking up discussing some of the questions and just how little it would take for us to do some of these "invitations". Some of the questions made my stomache turn they were so gross. All in all good harmless fun.