"You’re talking about making babies again," little Celesca piped up from the other side of the room, swinging back and forth on her chair as she pulled the crusts off her toast to eat them first. "I looked up what fertilise means from a book in the library, after you said about it before, Miss Hermione. It has to do with making babies, but I really didn’t understand it at all. It said you need a seed from a man, but all the men I ask around here never seem to have any seeds on them."