Rapper B.o.B gives men advice on how to 'choke out a woman' while having relations

Is this guy OK? Why is he giving out lessons on social media on how men can choke out women? The rapper took to instagram yesterday to spill sexual tips on how men can keep it interesting in the bedroom. And according to him, it involves choking the woman. He gave his followers step-by-step on how to properly apply pressure to their women's neck for an orgasmic rush. What he posted above