The slave now has to prove his endurance. Mistress Zora makes herself comfortable on his chest and squeezes the air out of him with both hands. She presses them hands very firmly over his mouth and nose so that he cant take a breath. She squeezes really hard, even if he starts to wriggle and writhe under her like a fish on land. She doesnt care about that at all because the slave has to be able to be able to endure! Its better that he thinks about how he can manage with the little oxygen supply that she still allows him.