Little Johnny walks into school one day to find a substitute in place of his regular teacher. She says, "Hello class, I'm Mrs. Prussy. When you say my name class, remember it has an 'r' after the first letter." The entire class says, "Hello Mrs. Prussy."
The next day the regular teacher is still sick. When Little Johnny gets to his desk the teacher asks him what her name is. Little Johnny thinks hard, and the says to the teacher, "I remember it has an "r" after the first letter." "That's right," she coaxed. Then, after a few seconds, Little Johnny's eyes light up and he asks, "Is it Mrs. Crunt?"