Noice. I suggest you ask your class politically incorrect questions, like who is a virgin, and count the male and female votes separate, or ask them who finds it easy to find sex, or who gets sex offers often, and again separate the results by sexes. You could make them write the SMV they think they have, them make everyone vote him/her anonymously, do basic math and then tell him/her his/her actual SMV.
I would fucking love to see that, and I could keep writing random stuff. Like what race would they never like as sex partner lol. Anonymous, so they can write what they want. Basic math and you can draw some graphs on the board.
Don't take me too seriously. And sorry for my bad english.