Enjoying the blowjob machine

Josh watches the screen, where two beautiful women are giving a double blowjob.

He tries to enjoy it, sitting back, thinking of food, and imagining getting blown himself. After a few minutes, he starts to get hard again. He strokes himself a few times before curiosity gets the better of him, and he decides to try the blowjob machine that he's already got dressed for.

He takes the lube that came with the machine and puts a squirt on the tip of his cock, then strokes himself a few times to coat his entire shaft. He then takes the machine and slides it down his cock. It's tight, with a texture that gives a jolt of pleasure each moment that it slides over a new patch of his shaft.

After pressing it all the way down to the base of his cock, Josh presses the rather conspicuous power button, wondering what it will feel like. But the button lights up blue for a moment, then flashes red, and turns off again.

The voice speaks again.

"You have to clip yourself in," she says.

Josh does as he is told. The metal-chain thong has three chains attached to it, spread around his cock, and wide enough that the final link is large enough to fit over a trio of fairly sturdy-looking pins on the sides of the machine. He easily slips the first two over their respective pins easily, but the third one is a bit of a stretch. As he attaches the last chain to the machine, he can feel the tension in the chains wrapped around him, holding the blowjob machine on his hard cock. He releases it and finds that it stays in place; he pulls up on the machine, and it doesn't want to slide off of his cock, not even a little bit.

He presses the button, and this time the blue light stays on. He feels a sudden tightness around his crotch and between his buttocks. The pins that are holding the chains retract inside the machine; it has pulled the chains in tight, so much so that there is no way that he could remove it even if he tried.

Then the machine begins to whir, and he feels the sleeve tighten around the head of his cock. The pressure extends down his shaft, as though a hand were sliding over it. It synchronizes with the blowjob on the screen, now a blonde sucking and stroking a big hard cock.

Josh relaxes, enjoying the sensation of being stroked by the blonde on screen. Not that he has a choice. She is soon replaced by a redhead, bobbing her head up and down yet another cock.

The machine follows her movements, but the sensation is not very strong, in Josh's mind. It keeps him hard and gives him some pleasure, but it stops just short of bringing him to orgasm, as though it knows just how to keep him on the edge.

"There you go," the voice resumes, "the machine will edge you and edge you, until we decide that it's time. Or you take matters into your own hands."

"What does that mean?" asks Josh.

"You'll work something out," the voice responds. "For now, just enjoy the big sexy porncock. You'll get some food when you finally get off!"

Josh is newly motivated, and the porn continues, as promised, with a new woman sucking a new cock. His cock.

Then another. Then another. All the while, Josh stays hard and on the edge of orgasm, increasingly **** for release.