He lets it happen

"Ok," he thought. "Ok." Sam accepted his fate.

He stopped trying to push the robot off, put his hands behind his head, and closed his eyes. He concentrated on all the incredible sensations coursing through him as the blowjob arm did its thing.

The cocksucking arm, by this point, had reached the base of his dick and would thrust all the way down, then pull up slowly, letting its tongues explore and caress him. Shivers swept down his spine as it concentrated on different spots. He shuddered, almost shook ,when they all lavished the underside of his cock, then rapidly licked and his mushroom tip. His balls swelled and contracted as he felt himself building an immense load, preparing to fire, then easing off. The robot, his loving captor, intended to make the pleasure last.

Finally, after what felt like an eternity but was probably like 5 minutes of bringing him to the brink and easing off, the arm descended to swallow him completely. The intense suction for a sustained period was simply too much for Sam. He cried out as he pumped the first of what may been 10 or more shots of thick, creamy cum into the robot. He thrust into it again and again, bursting with more and more seed for it to hoover up.

Sam opened his eyes as the sleeve retracted off of him and back into the couch.