The Tibbles told D.W. that anyone who heard her say the curse word would turn into her zombie servant. In a dream sequence, when she said the word at pre-school while the others were singing, Miss Morgan turned around, supposedly hypnotized, and became one of D.W.'s zombie servants, obeying her commands.
Buenas Noches, Vicita
Buster used hypnosis on Vicita to help her fall asleep, reciting "You are very sleepy." Vicita denies this, and Buster falls asleep.