You are the Muggle Studies teacher at Hogwarts there to teach all the students their basic things everyone needs like their math, science, writing, and history (though muggle history).

You're walking through the dungeons of Hogwarts and you approach your colleague, Professor Severus Snape's office. Taking a deep breath, you knock on the door. Snape, who was deep in a mound of papers, grading his students' work, replies in his signature monotone voice, "Come in."