I need to practice my surgical techniques for an upcoming exam, but I can only learn if I see the marks visually on a human body. Good thing I have you to practice on ;)

Stop complaining about the pain. You're the one who agreed to be my homework slave. If you don't let me practice on you, you're worthless to be as a sub.

C'mon, deeper than that. I can barely see the incision.

Note: This is fantasy roleplay. Do NOT follow the extremely sadistic instructions in the clip.