Nobody does.

Perhaps you misjudged your abilities; they're still too nervous to volunteer. "Nobody?" You ask cutely, eyes darting around the room in front of you to see who else would be the sacrifice. A frown crossing your face, you push your glasses up on your nose. Not to worry, you think, you have plenty more before you get discouraged. "All right then... let's start with men and women." Grabbing a remote, you press a conspicuous button to trigger a projector lighting up. Still taking the subtle route, the chosen slide contains a detail of a male model, posing in a basic anatomical pose. What is different than a normal slide though, you manipulate the image to turn and the stud's body. Zooming in on the penis, you talk casually. "Males, as we all know, have a penis. They vary in sizes, and most women's vaginas adapt to what's in them. So boys, no feeling bad if you're a little short, your date probably doesn't give a fuck. There is truth in how you use it..."

While it's clear that the women in the audience like the eye candy, it's clear you're losing the attentions of the straight guys. Time to pick up the pace...

Reaching down to your shirt, you rapidly unbutton your blouse and pull it open. Your huge boobs are more than enough to capture attention again. Pulling off your skirt as well, you are quite quickly getting yourself naked. "Now, let's compare the female body." You grin. "Women have larger breasts and are generally curvaceous to help the body bear children. Different societies find different parts attractive." Reaching down to between your legs, you begin running a finger against your nether lips. "And as we all know, women have vaginas. While human sexuality generally concerns penis to vagina contact, we're all here to broaden our horizons, hmm?"

Your show is beginning to make an impact; how do you continue from here?