Add a straitjacket and secure gag, then order

As mentioned before, this will cost extra, but is definitely within our abilities. The black leather straitjacket will be custom made for him, and we´ll make sure his mouth is stuffed with a very filling and muffling pump gag. Your massive demon stud will be delivered to your door in a month.

1 month later

You open the door, still tired and not having finished breakfast. Outside you see a latino man in a grey uniform with the Studs R Us logo on it. "Hello, I´m here to deliver your stud. Could you please sign here?" He hands you a form, which you sign, suddenly wide awake as you realize your stud is here.

The delivery driver walks back to a rather plain grey delivery van and opens the back, beckoning for something to come towards him. You hear somethign heavy shuffle around and walk out, then you see your stud coming out of the van. He looks to be between 7 and 8 feet tall, and had enough muscle on his body to, if her were a human, guarantee a positive steroid test. His skin is red, his hair pitch black, and his eyes almost glow a fiery orange and he had short but thick black horns atop his forehead, curving up and back.
His upper body was covered in a thick black leather straitjacket keeping his arms tucked to his torso. The crotch straps framed his crotch, letting his massive cock hang free. Well, right now it was standing out, rock hard with almost pulsing veins running up the shaft.

What was visible of his face looked happy, although the lower part of his face was covered by a thick leather panel held there by a thick strap around his head. At the front you saw a pump jutting out, and judging by his garbled and muffled speech, it was pretty inflated in his mouth.

The delivery driver pointed to you, and your demon stud rushed over to you, stopping just before reaching you and getting donw on his knees, then shuffling closer and nuzzling up to your legs, moaning contently.
"Have a good day sir!" The delivery driver shouted, then drove of in his van, leaving you with your demon stud in a straitjacket and gagged, nuzzling into your legs.