sexuele.tumblr.com/post/22369947667/
sexuele.tumblr.com/post/22369966338/
sexuele.tumblr.com/post/22374529320/
sexuele.tumblr.com/post/22435546516/
i like that the person who made this diagram only put the numbers
sexuele.tumblr.com/post/22436750956/