A fat Russian student prefers sex with a teacher to a bad mark.

Standing at the blackboard, a plump student squeezed the maximum out of her brains in order to answer at least some questions on geography. She managed to remember something, but as she did not know, she would not remember anything else. The intonation of the teacher asking if she knows the answers to the questions, the girl perceived as a threat of a bad grade and tried to seduce the teacher. She succeeds because it turns out the teacher loves plump ones.