Yes

“Fine. Go ahead and try to hypnotise me and test me, then,” you huff, insulted she doesn't think you could suck her off on your own, even though you know it's a fair presumption. You're pretty confident you could get her off, but you're inexperienced, you've never actually sucked a dick before, and hers is rather on the large side. It's intimidatingly long and equally unnervingly thick as it stands in front of your face.

Her pendant starts to sway in front of your eyes, between your face and her crown, and she kicks the button on the television to turn it off. “Listen to my voice. Hear my voice and focus on the sound. Relax. Surrender your mind to me. You are mine to use and control. You will fall into a trance and kneel before me, your mind and your mouth open to my commands.”

You watch the pendant sway, sceptically, but your exercise bouncing slows steadily until you're simply on your knees in front of your twin sister. You feel your eyes becoming heavy, as Allie repeats herself, the only sound in the room, as her scent fills your lungs. Your eyes drift down, down, until you take a deep breath and sigh, your mouth hanging open.

You no longer know what Allie is doing. As you fall into a hypnotic trance, everything seems to drift away around you, until you feel the crown of Allie's thick cock against your lips. You register the sensation of her cock sliding through your lips and across your tongue, past your gag reflex and down your throat. You don't gag, you feel a weighted peace that prevents you from moving.

You feel her hand in your hair, guiding and controlling you, “You are my cocksucker, now, Brian. You are my bitch. Say it!”

There's no way I'm going to say that! you resolve to yourself as her cock slides backward, out of your mouth, and then you speak, “I am your cocksucker, now, Allie. I am your bitch.”

What? That's not what I ... ! your mind protests weakly.

“You like sucking cock. You are a whore, eager to serve me, eager to earn money for me. You want me to reprogram you,” Allie says. You can feel the hypnosis as it works on your mind, but you can't resist it.

“I like sucking cock. I am a whore. I want to serve you, earn money for you. Please reprogram me, Allie,” your mouth repeats the words, ingraining them into your brain. You try to resist, but her words and your own automatic, hypnotised repetition, are making it, and your cock, hard.

Her cock slides back to the hilt in your mouth, stretching your throat. You feel like **** on it, but your body simply receives her cock like it was made for her to use it as a sheath, “You cannot cum without permission. You don't even want to cum unless you're told to. You're just a little faggot slut.”

I'm ... not a ... you try to resist as she pulls out again, letting you speak, “I cannot cum without permission. I don't want to cum unless you tell me to. I'm just a little faggot slut.”

“When my nuts hit your tongue, you will wake up. The first phase of your reprogramming will be complete, and you will forget all resistance and think this is just the way it has been between us since our birthday,” your twin sister says. Then you feel her crown in your mouth again, grinding through, down your throat, as she begins to fuck your mouth in earnest.

Your body simply remains still, taking it, as her nuts slap against your chin, again and again, until she thrusts and holds. She bucks her hips, and forces her nuts into your mouth, her entire prick stretching your throat around it. Your eyes flutter as your twin's balls land on your tongue, and your mind snaps into place, and you quickly start to suck your sister's balls.

“That's a good little faggot, bitch,” you can almost hear your sister smirking at you, her voice sounds like she just won something, but you can't imagine what it is, not now, not anymore.

Then she pulls her pulsing prick from your throat and pumps her load across your face. She wipes the last drops of her release off from her crown onto your lower lip, looking down at you, “Not going to thank me for giving you what you deserve, faggot?”

“O-Oh! Y-Yes, of course! Thank You, Allie, for letting me service you!” you didn't know what you were supposed to say, but her soft sigh tells you that you got it right or close enough to right that she won't punish you.

“That'll do, faggot. You're still in training and development, so that'll do, for now,” your twin sister says. You don't know what she means by that, but you're pleased to hear that she's satisfied enough to keep you.

You can only think of one thing to do now. You lean forward, kissing her crown and wrapping your lips around it again, sliding your mouth down and beginning to suck her dick again. She strokes your hair lovingly, a sure sign you're doing a good thing, before she pulls back and you hear her walking away.

“Good boy. Come, faggot. I want to watch television for a little while. You may suck my dick while I do,” your sister says permissively. You crawl to her, following the sound of her voice until you find her feet with your hands. You slide your hands up until you find her hips and then apply your mouth to her dick again.

As she starts to watch television, your mouth slides up and down her cock, velvety lips caressing her shaft, until there's a knock on the door. She groans and plants a foot on your chest, pushing you back before standing up, “Stay, fag.”