Big, strong, and programmed

When the capsule turns back into a table, they waste no time. Needles plunge themselves into your cock, balls, arms, and ass. A giant helmet comes down and covers your head, send slightly painful signals to your brain. For several minutes you writhe in pain. You feel a strong sensation in your dick, pleasureable at first, then gut-wrenchingly painful, almost like your cock is splitting in two. Your muscles flex and you feel your skin streched tight around them. Finally it stops.

The table tilts up and you're looking into a mirror. Your huge in every way, shape, and form. Your muscles are so big you look like you've been using steroids since you were two. Without being bothered by the side-effects, as your ballsac is now huge, like its holding two tennis balls. And your cock....or should you say cocks. Because now you have two. Two eighteen-inch long, four-inch wide monsters.

All the aliens hit their knees as a female walks in wearing a crown and what must pass for silk around here. In her hands she holds a collar and a leash. "Finally, he is done." She smirks wickedly at you and holds out the collar. Because of your programming, you know just what to do.