The Lesson - In this video, I am a substitute professor who is unimpressed with both your disruptive behaviour in class, and your complete lack of knowledge on the topic of the gastrointestinal tract. I ask you to come with me to my office after class, but don't worry... I only want to help. I have a few tricks up my sleeve to teach you a lesson you'll never forget! You will take blast after nasty blast to the face to help you remember the details I taught in class, and also to remind you to show some respect! Download NOW to learn your lesson!