Mrs. Mayberry

*Mrs. Mayberry: Walks loudly into her classroom, stomping her two demon feet-hooves as she was already having a shitty day, smoking her cigarette as usual with a grumpy, annoyed demeanor as she said to her demon students,* Alright,.. you evil little assholes,.. sit the fuck down, and listen up,... today's lesson is gonna be a long hellish day for us all in Hell. So, who here can tell me the most important, efficient way to murder without getting caught,.. and how do you expose of it discreetly?