some men have indeed put them to use.
Why Do Men Have Nipples? is an entertaining read aimed at adult audiences written by an emergency physician and a humorist, so the topics are approached with a pretty relaxed attitude. They are not entirely family-friendly, but I wouldn't worry too much about giving them to older teens. This is factual, educational stuff, and in some cases could encourage young readers to take up medicine. The human body is weird.
Learn why asparagus makes your pee smell. And why can't some people smell it?
Why do old folks have hairy ears?
What's the deal with ice cream headaches?
There is also a follow-up book, Why Do Men Fall Asleep After Sex?, covering more of the same, with an added touch of the Battle of the Sexes. These are older books, but they are great examples of well-focused trivia books, and they aren't too out of date.
Mr Ripley's Enchanted Books: Middle-Grade Book Picks March 2017 - US Published Post One - Raymond Arroyo - Will Wilder #2: The Lost Staff of Wonders - Published by Crown Books for Young Readers (March 7, 2017)*Twelve-year-old Will Wilder is back...
4 days ago