Stand at the front of the class, jump on the teachers desk, and take all your clothes off. Start pissing yourself and throwing feces while making loud grunting noises. If any other person in the class dares challenge you, bite their face and neck. If no one does, congratulations! You just asserted yourself the Alpha Male of the group. You now have first pick of mating partners. Pick the girl you want, claim her as yours, and have your way.