Sarcasm is an important part of Marlowe's tone/personality and as he finishes his imaginary rant about the cost of his dental work he adds - as if such information would matter to the jailer - "I'm just telling you Captain. It's the little things that count." There are plenty of one-liners, such as Marlowe saying that he belongs in Idle Valley as a pearl onion belongs on a banana split. These make the book a typical work of Chandler and a typical "detective novel" of the period.