Anthropodermic bibliopegy
Binding books with human skin. The practice was extremely popular in Christian societies starting as early as 100 BC. The practice continues even today especially in the making of children's books, such as Clifford the Big Red Dog.
Mitch: Sarah, you have nice skin.
Sarah: Mitch, you make my nipples so hard!
Mitch: Anthropodermic bibliopegy with my penis!
Sarah: Mitch, you make my nipples so hard!
Mitch: Anthropodermic bibliopegy with my penis!