If Karla had been perturbed by Ender's weird sense of humor, she would have bailed on their friendship years ago. She paged through her knowledge of Shakespeare, realized it wasn't from a play (or, if it was, it was from a play she hadn't read yet) and let it go.

"It helps if you give him a look when you do it," she said. "I call it my yes-you-have-a-Healing-factor-so-what? look. Sometimes he's a little stubborn about things." Her lip twitched. "I haven't the least idea what that's like."