freak them out with a bio pop quiz! ask funny question in them that seem ot make sense but actually don't. or tell them the quiz marks will be taken for exams so ask questions from the higher grades that would make them sweat.
Study really hard the night before so you know all the answers. You will make them look like fools, and you will be the king brain ruler of them all! They won't know how you did it, because only you will know that you studied your ass off! Mwa-ha-ha-ha-ha-ha!