Bound Trapped For Facesitting

The slave is fighting way too much recently when I throttle him - so today, I tied his arms and gams together rigidly and additionally put his head in the smotherbox! Now hes entirely incapable to stir and totally at my grace. I sit down on his face with my hard jeans and ruthlessly throttle him under my ass. The hard fabric of the jeans slowly flattens his nose and the longer I keep sitting on his face, the more the trapped loser panics - but theres nothing he can do about it - he can just hope, that I get up in time. Every now and then I get up for a short time and let him breathe - before I sit down again, and the smothering continues!