The teacher and her student are having an affair. The teacher tries to convince her that it's not a big deal, but the student insists that the whole thing is just a joke and that she'll do it again at school the next time they have sex. This is the first time she's heard of this kind of thing, and the teacher is all, "Gee, that's a good idea. I'm going to have sex with her next time we have sex." The teacher, however, is not having any of this. She's already had sex with another man, and she doesn't want to be seen having sex with someone who's supposed to be her student. She wants to make sure that no one sees them having sex.