Used blackmail so she begs for my cock

A woman in black lace stockings and a pink bra removes her shorts, then straddles a man seated at a wooden desk. She leans back as he penetrates her from behind, her hands gripping his thighs. Later, she kneels to perform oral sex while he stands, then lies back on the desk as he continues thrusting into her. The setting is a plain room with light blue walls and simple furniture.