I've put the slave in the smotherbox and bound his hands to the box as well - this way he's completely helpless and can't defend himself - when I sit down on his face and smother him under my jeans ass. I mostly ignore my human seat pad and answer some messages on my phone - while the loser's panic rises as his oxygen runs out. I grant him only short chances to breathe before I sit down again and the facesitting continues! I just love how the smotherbox keeps him in place ... holding his face completely steady ... I could almost forget that there's a human under my ass ... :-D