Edited sentence: Authors present competition as the natural way to figure out hierarchies among boys and men.Representation of sperm in children's books follows the heterosexual script.Semen is portrayed to be active through usage of such words as “swims,” “digs,” “wagging,” “wow,” and “yahoo.” Authors also tend to represent sperm as competitive ("may the best sperm win"), which reinforces hierarchies among men based on physical strength, endurance, and speed