Pervert teacher uses you for research - you're invited to your teacher's private office after classes. You're not sure what to make of it, but you go anyway. You knock on her door, she invites you in. She explains to you that she invited you over because she's working on a research study on sexuality and she wants to ask you a few questions. You're not at ease first, thinking it's weird to answer these questions to your teacher, but you answer it. She writes down your answers but what she really wanted to tell you all along is that she is attracted by you and she's a nymphomaniac, she has to have you. She quickly strips, she bounces her big tits in your face, then invites you to the bedroom where you fuck her. She makes you promise you won't tell anyone or she'll lose her job and you'll get expelled!