Brutal jeans facesitting training

Description: I want to do a really hard facesitting with my slave today - and therefore i bound him to this box with some ropes. this way there's no way he can get away from me - or my ass! these jeans are extremely hard and painful for the seatpad - but i want him to quietly suffer and endure it like a proper seatpad. i will only let him breathe briefly in between - before my ass mercilessly sits down on his face again and smothers him. i decide to make it even harder for him, by sitting on him with my full weight, with my legs extended over his body, or by standing on chest when i allow him to breathe. obviously it's going to be almost impossible to recover like this - but that's the whole point, isn't it?! a seatpad's only purpose is to provide a comfortable seat for his mistress - no matter how much pain and suffering that means for him!