As a private tutor, I caught the eye of one of my students' mothers, who would call me whenever she had the chance, asking for my dick. The mother was a widow and sexually frustrated, and her libido exploded, so every time I visited her house, we had sex when the students weren't around. My class started out once a week, but before I knew it, I was being called in three times a week, and my student's grades improved dramatically. "My mother looks better ever since you came," my student said happily.