A masochistic man lies on the floor with his head inside a facesitting box. Only the man's face sticks out from the box. The mistress comes and sits on the box with her huge ass, crushing the man's face as if it were the most natural thing in the world. The mistress repeatedly stands up and drops her huge ass on the man's face, crushing him. The man writhes in agony, but the mistress rubs her ass and pussy against his face and looks down at him with a grin. The mistress climbs onto the box and crushes the man's face with both feet, moving her body as if she's surfing and laughing. The mistress plays by jumping on the man's face like it's a trampoline. The mistress presses her knees against the man's face and uses all her weight to crush his face with her knees, moving them back and forth and side to side, vibrating and laughing. The mistress stands with both feet on the man's face, marching in place and teasing him. This is training for men to become human chairs.