The professor's office transforms into a den of carnal knowledge as he agrees to fuck his student's big ass in exchange for passing grades. She bends over, her massive ass jiggling as he buries his cock deep inside. He grabs her hips, thrusting hard, their flesh slapping together. The student moans, begging for his load, and he obliges, pulling out to paint her face with his hot cum, a testament to her newly acquired knowledge.