As the title of this book suggests, it's about poo.  It is hysterically written and answers commonly asked questions.  The authors give stool labels like Deja Poo (where remnants of undigested food are seen, ie corn), Monster Poo (how did this large thing come out of me yet gives a feeling of satisfaction), Floaters vs Sinkers (hovering on the surface is caused by gas and fat), The Chinese Star (excruciatingly painful), and D.A.D.S (day after drinking stool). I think it is a great read for those uptight about this topic. ;)