She knocked at his door. He beckoned her in and she could see all four tapes on his desk. "Please, sit" he said invitingly. "You are probably curious about why you are here." She nodded. "Did you get your A?" Again, she nodded. "Good, I'm glad, and obviously this kept you out of trouble with your strict parents?" She nodded. "Excellent. So you are here at least for another semester." It was a statement not a fact. "Now I want you to suck my cock and swallow my cum." He said, in the most matter of fact way.
Puzzled she said "But, you already gave me the A, you're not going back on our deal are you?" she said, with rising anger. "I don't have you for class, so I don't need another grade from you." She added.
"Oh dear, you seem to fail to understand your situation. This is no longer about classes. This is about these four tapes. I'm sure you wouldn't want these sent to your parents, would you?" He smiled. As she dropped to her knees in front of his chair, he slipped his rigid dick out of his pants. She immediately bent to the task.