Daliah:, How's the air downunder?

Daliah sits with a reverse School-Girl-Pin (SGP) on her slave's face and has the total controll over his air-suply!?! Nearly! If the lack of oxygene is to big, he begins to struggle.... Daliah rides this mostly out; if he gets free for a sip of breath, Daliah immediatly jumps again with her ass back on his face.