An observation room

You enter a large observation room, 2 stories tall, surrounded on all sides by windows on the floor above. Several small beds with straps and stirrups line the walls as well as a ton of medical equipment beside each that you don't understand. Your father stands proudly in the center of the room beside another man in a white medical coat, slowly jerking a massive cock to hardness. You stare at it as you approach while he stares at your tits.

"John, this is my daughter Sarah." He says to the masturbating man, then looks at you, still staring at John's growing dick, and frowns slightly. "Sarah, don't be rude."

You're the rude one here? You look away sheepishly, but your father clears his throat and gestures towards John's crotch, making it clear that your staring wasn't the rude part. "Come on, sweetie. I asked him to save his morning dose for you."

You try to refrain from rolling your eyes, but fail, as you drop to your knees in front of the man you just met. Your two hands replace John's one and you're shocked by the weight of the hefty thing as he lets go. You give it a tentative lick as you begin stroking the length with both hands.

"We've got a surprise for you today sweetie!"

This isn't surprise enough? You think, opening your mouth and taking in most of the head, but find it hard to open wide enough for the whole thing. You try to make due with swirling your tongue around what fits as you jerk slightly faster. Your father frowns at you again.

"Don't worry John, if she can't get you down her throat, I'm sure we can get you up her ass."

You suddenly find the motivation to open your jaw past its limits and get the head inside. Shit, you think, I have to get this thing down my throat or it's going up my ass? This is impossible! You begin desperately trying to fight the entrance of your own throat to get the giant thing inside while your father looks down with satisfaction and continues his thought to you.

"Here a Pfucher, we're on the bleeding edge of medical technology to fight the H1W1 virus and its symptoms, as well as boosting the natural medicine production in males!" Your father says, seeming like he's said the line hundreds of times. "Normally there's a long waiting list for our medical trials, since women everywhere are **** for anything to alleviate the symptoms and make life a little easier.

You can't imagine why, you think, retching uselessly around the massive head as you try to relax your throat and push his cock through. If he's got something to help, why wouldn't he do that first? You want to say as much, but don't want to risk the ass fucking. You give up stroking and begin trying to pull yourself down by the back of John's legs.

"...But since your Daddy cares for you, I can cut the red tape and get you to the front of the line for any of our experiments today! I'll even let you choose which one."

So if I survive this massive cock I get to be a guinea pig for my father? Great, you think. You decide to give it one final push as John takes pity on you and helps pull you down with both hands as well as thrust. Your throat gives way at once, the additional **** causing well over half the length down in an instant. You switch quickly from pulling to instinctively pushing away as John groans in satisfaction, slowly holstering the remaining inches into you. Your eyes water to the point of tears as your chin comes to a rest between his balls.

Your father begins reading options from a clipboard, but you can't hear him over the sound of your pulse in your ears. How are you supposed to make a decision like this? John begins thrusting as you begin to see sparkles, your useless pushing growing weaker as you begin to fade.

Your father looks at you like he expects a response, but your eyes flutter closed.