My first private tutor was a beautiful woman with huge breasts! I thought I couldn't concentrate on this... but she asked me, "Are you really that interested?" and let me touch her breasts! From that day on, whenever I got stuck studying, I would rub her huge breasts to refresh myself! If I got a good score on the test, I was allowed to insert my dick! My grades improved rapidly with the reward of her exquisite breasts...