Ken a little boy who just hit puberty went to a library to gather information for a report on the human body. He went up to the closest library which happened to have Elizabeth and the book. After a quick search through a lot of books he spotted one old book and decided that it would do. Although books like these got less reliable with age it would be interesting to see if he could do some sort of paragraph on what we used to think the human body was like. Since he needed only a single book as a source he would do the rest of the research on the internet. He took the book and got it checked out by Elizabeth who was very tired from organizing books during an all-nighter.
Back home he went to his room and opened the book to the first page and was given the line "think about what you want to know and then turn the page". Being a bit of a horny guy who was just discovering his sexuality he thought of the female naughty bits and then turned the page and was surprised to have actually found some very detailed information about the human female breasts and vagina. His dick got hard and then he heard a knock on his door.
his sister veronica asked "Hey Ken, got the stuff you needed for your book report?" and then opened his door revealing the 16 year old brunette with C-cup breasts and some nice curves.
Ken quickly closed the book, got up and said "yes I did, you don't have to worry about me."
having glanced at the small tent Ken had downstairs she said "...not about the report i guess, but... from what i remember the human anatomy books aren't that titillating. I swear maybe you should look at porn or something."
Ken reopened his book having thought more about the naughty stuff of the female anatomy and the page he got was a little different. it listed the traits of both the human breast and human vagina. Things like texture, how breasts lactate after having kids, bleeding once a month. he really thought some of the stuff was interesting and then kind of brushed his hand over some words in "breasts lactate after having kids" and some of the words vanished and turned into "breasts lactate". he then noticed that the picture of the normal breast had become more swollen with milk glands being active, and the picture of the breast after birth had vanished altogether.
Veronica knocked on Ken's door again and then opened it and said "You know Ken I was a bit harsh and... Ken stop staring at my breasts the-" Veronica then looked at her breasts as well and saw that her shirt was wet around where her nipples were. Veronica then quickly said "Hold on, i'll be right back." Veronica then left to go to the bathroom and check out what was going on to her body. Ken then looked at the book again and wondered what else it could do.