Gary and Wyatt don't like the Sex Ed class that Farber High provides. No one will tell them about sex straight-out. As usual, Lisa tries to help solve the problem, by zapping something. This time she makes herself the teacher of Farber High's new and improved Sex Ed course. Gary ends up not enjoying this class as much as he thought. His lab project? Well, he needs to do an in class demenstration with his new lab partner.