The authors seem to want to take the subject seriously, but can't resist the (literal) potty humor. In straddling the line, they don't go far enough either way and it makes the book rather meaningless.
I never laughed out loud nor did I learn anything new. At least it didn't waste a huge amount of my time...after all, I was just sitting there "waiting it out" anyway.
C-
Non-fiction #2
