Jane's breath-hold-education

Description: Jane, in a stunning black lycra-dress, want to test how long her slave can hold his breath. She sits reverse on his face and waits for his reaction, but he's a good slave, can save his air for long periods and holds still. To boring for her. So she decides to inflict some pain, for making the test more difficult. She lifts her feet off the ground for sitting on him with maximum weight, puts her feet in high-heel-boots in his groin-area.... more pain?..... more action!