Your Face is My Cushion

My ass is so bubbly and perfect, you just want to bury your face in it. I have a better idea, though... what if I you in it? I'll sit on your face, grinding My ass against you so that you can barely breathe. Will you be able to survive when I barely give you time to breathe? I'll stand up briefly, just long enough for you to catch your breath, before sitting back down, longer and longer each time, until...?