Coolest Book

My friend Cath got this book for Christmas from her sister and it is the funniest thing. It is a collection of "Weird Things Customers Say In Bookshops" and it is written by Jen Campbell. It seems the idea started as a blog. 

Customer: I read a book in the eighties. I don't remember the author, or the title. But it was green, and it made me laugh. Do you know which one I mean?

Customer: Hi, if I buy a book, read it, and bring it back, could I exchange it for another book?
Me: No... because then we wouldn't make any money. 
Customer: Oh. 

Boy: When I grow up, I'm going to be a book ninja. 
Me: Cool! What do book ninjas do?
Boy: I can't tell you. It's top secret.