Morticia Mulberry Maxine Collins—Morty, or Moo, for short—is an excellent hostess. She’s fond of greeting guests to the house she shares with her mother with a beaming smile, a booming “Hiiii!” and an upraised arm bent at the wrist. The gesture is her approximation of a fist-bump and she’s likely to repeat the greeting several times, as it’s her current favorite of the dozen or so words constituting her entire vocabulary at the age of 17 months.