My slave is new to the world of breath control, so I playfully ease him into it by sitting My beautiful Black ass on his face. My latex thong makes a nice seal with his latex hood, making it very difficult for him to breathe while under My ass. (But as you can see from My smiles, I'm not bothered by any of that.) I laugh at his predicament and push him further, even giving him a few moments of air deprived bliss under My feet (when I'm not using My sexy ass to cut off his air, that is).