A strict professor catches her young, rebellious student masturbating in the library, his eyes locked on her ass in a skirt. She scolds him, but his lustful gaze ignites her own desires. She bends over, offering her ass, daring him to spank it. He obliges, his hand meeting her flesh with a loud smack. She gasps, her pussy throbbing. He pushes her against the shelves, his rock-hard cock pressing against her ass, ready to fuck her brains out, making her his naughty little bitch.