Pinned down and smothered mercilessly

Description: I know this slave struggles to hold his breath for a long time - so today, we're going to train this! i sit down on top of him, pin down his arms and hands with my knees and legs, so he's completely unable to move - and then start to smother him with my hands. with my full weight resting on his arms, he's completely helpless under me - and this way, i can easily apply a lot of pressure on my hands to completely seal his mouth and nose. later, i sit down on his chest and stomach - this way it's also going to be difficult to recover when i let him breathe for a while!