gingerbread man named Preacher

I walked into biology class and there was a gingerbread man. Take a seat! He said sternly “whenever you can.” Some of us were stunned. Where was our teacher? That is my business, he said, reading our minds. My name is Preacher. Preacher! What kind of name is that for a teacher? I began to snicker, but even smiling is an overreach-er. If you have a stern sub like this fellow, Mr. Preacher. Who in no way resembled our instructor, the teacher.