After riding Mr. Crude to her “C” in his class, Kagney made sure she cleaned his cock properly. When she finished, he suggested she try for a “B” instead of settling for the “C.”
“You definitely have what it takes to give a good blow job, and it would raise your grade one letter,” he told her.
Kagney grinned and responded, “And after I earn my ‘B,’ may I try for an ‘A’ next?”
“Yes, you may!”