Activity: Get a picture of yourself and masturbate to it. Ideally the picture should be high res. If you can't get and maintain an erection your sibling might die.
Tip: What better way to prove to your teacher that you can find the sexuality in yourself than willingly masturbate to a high-res picture of yourself in front of him/her. Remember that the best way to do this is really focus... let your scene partner be the weird one... if you're acting you're not the weird one... you're the student.
Interestingly enough I actually think some teachers would think this is the perfect Meisner activity.