>>2334144A.I. Experiments With Tunneling.
Ryan gasped in apprehension as the purpose of the spinning cylinder became apparent when it lined itself against his tightly tensed entrance..
"Shut down!" He screamed, thrashing futilely against the metal cuffs that held him pinned open on the lab table by his wrists and ankles. "A. I. Override, shut down!" His face was flushed with the exertion of struggling against his inflexible bonds, the cylinder have stopped spinning for him to see that its hard metal surface was studded with bumps.
With a final realignment the cylinder begun to push itself up - Ryan's tight virgin flesh was no match against its relentless mechanical might and he could feel himself tearing to accommodate its enormous girth as he choked on his own screams. Through his tear-blurred vision he sees the blinking red lights that was mounted above the lab's movable camera eye looming closer as the unyielding length begun pistoning its way in and out of Ryan's bleeding bottom.
"Stoooooooooooooooop! Sttttttooooooooop it, PLEASE!"