Yes, you open wide.

You nervously open your mouth. "Good, you're gonna fit in great here." The orderly mechanically inserts the device into your mouth. You feel him put the metal bits against your molars pressing your mouth wide open, then your lips pulled out so your whole mouth is visible from the outside. Finally you think it's over and his pinches your tongue and pulls it out of your mouth, then you feel a clip, like a clothespin grab onto the tip of your tongue, holding it out. And you feel the metal ring clamp tighter, and notice that it's now so stiff you can no longer shake your head.

"Alright, I'll make a note on your chart that you were very cooperative." You hear him clean off his hands. "Now you're going to go through the standard cleaning procedure, then final orientation. Sorry you ended up here buddy, you seem nice enough. Stay strong, and don't think too much about escape, it'll only get you into trouble. Good luck." And you see him push a set of buttons on a small computer panel.

Then with a jolt the frame you're on starts moving backwards. The wall behind you must have opened up, because you end up going back farther than the room extends. You see yourself enter a hallway, and eventually come to a stop. The frame rotates 90 degrees to the right, and you see. . . yourself. There's some sort of mirrored wall, and you fan finally see your condition. You hang there, eyes sunken, open mouthed, small rivulets of drool already falling from either side, arms and legs trembling, already atrophied slightly, and completely naked and ****, except for the metallic cage on your cock. You sniffle, ready to cry at how pathetic you look.

Then from the darkness behind you out emerges two thin metallic devices, you don't know what they're doing but they look sinister.