David had never been to any region that experienced earthquakes, but for him, the motion
that he now experienced was what he imagined would be felt by those faced with such a
natural disaster.  The only redeeming feature was that he did not have to look at the
gyrating ceiling.  His vision was filled with greying oppression, for it was not exactly
pitch black as the buttocks atop his face bounced rhythmically with the motion of the
spinning and bucking seatmount.

At such times and during such motion, Mrs Abdul liked to keep her bottom planted firmly
on the face beneath her, and she was expert in doing so.  She did not allow the machine to
have the upper hand as she ground down, pressing her heavy, moist and scented nether
regions into every crevice and feature of the squashed face.  Gravity as well as the
motion assisted her in her task.  She still gave the odd lift from the face, but only very
slightly.  She had learned that to go with the machine was better.  She was mistress of
the motion, so that the face beneath her absorbed all the impact of the gyrations; of the
bucking, of the sheer squashing and pummelling process.

All David could see from time to time was a three-second vision of perfectly shaped
buttocks as they lifted briefly from his face to give him the chance to breathe.  They
were magnificence itself.  The material of her panties had now been forced well into her
rear, cavernous, and most dark crevice as again and again she raised from the perspiring
face beneath her.  Yet, it was only ever for the all too brief three second period, and
then BANG!  Down came her bottom again for a further twenty-four seconds as her
torso-breaking thighs gripped the sides of the spinning machine with immense strength. 
What was left of David’s nose was forced well into her bottom, and now strained against
the very thin barrier of her highly scented knickers.  And still the flesh of her thumping
buttocks bore down as if to obliterated completely the face beneath her.  She could have
sworn that she heard David groaning, but she could not be certain of anything she heard
against the noise of the machine and her heavy panting as well as the hard slapping of her
buttock-flesh against the tortured face beneath her.