Cruel mistress Latexxa strangles a weak slave with her powerful hands first. The slave is in big trouble as she shuts his air pipe completely. But even that isn't harsh enough for his mistress and she knees down on his neck - applying even more pressure to his throat. This guy can be grateful if he walks out of this room and isn't carried out in a bag!
Mistress Onyx has no mercy for weak and helpless males. She holds Steve in tight sleeper-holds and he chokes him over long times. You can see him slowly turning purple trapped in her powerful arms.