Van is taking his final and he fails miserably. His teacher, Janet Mason, takes this personally and is convinced that Van failed because she's not motivating him properly. She decides the best way to motivate Van is by riding his dick.
Video from Janet Mason in Naughty America (Janet Mason and Van Wylde in My First Sex Teacher)
Pictures from Janet Mason in Naughty America (Janet Mason and Van Wylde in My First Sex Teacher)