Dr Penny Tration's Ass Test

Dr Penny Tration does numerous experiments with her male clients, all in the name of science. She hopes to cure them of their strange fetishes and throws herself into her work. In this case, she carefully examines what happens when she plants her luscious butt on the subject’s head and remains seated. She monitors his heart rate, rate of exhalation, breathing patterns, the degree to which he flails his arms, etc. She notices that despite variations in the above and even when she is full weight on his face, he never tries to buck her when he’s running out of air. Does this mean his fetish is ineradicable or has he sustained brain damage from lack of oxygen? Or, is there a way to trick him into bucking her off, thus signalling he can be cured of his face sitting fetish?