Christina wins

Unfortunately, Christina proves to be a better bimbo than you. She makes you come first, and as you lie in the throes of your passion, she climbs over you and happily straddles Michael's cock. You watch lazily as he fucks. He's fucking her hard enough to fuck her brains out, you think, if she weren't a brainless bimbo.

You giggle at your own stupid joke and then go back to fingering yourself as you watch. Michael was sooo smart to take you and Christina to the room for bimbos. You didn't realize it before, but you make a really good bimbo, even if Christina is better still. You can't wait to leave the lab and get back home and show off your new bimbo look to all your friends, especially the men. Or did Michael say being a bimbo would wear off? You can't remember. You're so happy Michael is here to take care of you.

Christina rides Michael cowgirl and then reverse cowgirl. Then he lifts her off and strokes her big bimbo ass. Is her ass bigger than it used to be? You can't remember. All you know is that you're jealous of Christina as Michael positions the tip of his cock against her asshole and gently pushes forward. His cock is so big and hard. You wish it were you getting fucked up the ass right now. You've never done anal before, but you're pretty sure that a bimbo is an obedient ass-slut, among other things.

Your friend--what was her name? Oh, it's not important--certainly is obedient. Her long, fake bimbo fingernails dig into the sheets of Master's bed as he reams her asshole. The hoop earrings jiggle back in forth in time with her boobs as she moans. "Oh, oh, oh, oh," she says repeatedly, like some kind of broken record. You frown. What is a record anyway? Why would it be broken? You can't remember. That's why your Master is here. He remembers these things. You just fuck.

You get yourself off watching the two of them go at it again and again. Master cums inside your friend's ass, then she lets you clean him off with your mouth before he tit-fucks her with his semi-flaccid cock. Eventually, tired and--at least on Master's part, spent--the three of you collapse into the sodden sheets and have a well-deserved nap. You dream of being Master's fucktoy for the rest of your life. He lets you get an operation to enlarge your tits, and he fucks you every morning and every night. You want nothing more than to please him with your fake bimbo body, and every time he shoots a load into your cunt or your mouth, you know you've done well....

When you wake, your head is miraculously clearer. You sit up without a trace of grogginess, and you look around you. It's dark outside now, but a table lamp illuminates the room. Michael is sitting on the chair next to his bed, sipping a cup of instant coffee.

"Ah, you're awake. How do you feel?"

You look down at your body. Still nude. The spray-tan has gone, and your pubic hair has somehow grown back. You glance over at Christina's sleeping form. Her hair is back to its original length and style, no hint of bangs visible on her forehead. She has a very contented smile on her face, but it's otherwise devoid of makeup. You don't have a mirror but assume your own appearance has likewise reverted.

You look at Michael. "H-how?"

Michael gives an expansive shrug. "To be honest, it's not in my department. Something about memory-storing fat cells boosted by a nanomachine solution ... yada yada. All I know is that once our guys in engineering get the kinks ironed out, it's going to make the company--your father included--millions."

You can only nod your head in dumb agreement. It's hard recalling your thoughts from when you were under the influence of the look; they're so disjointed and unfamiliar. But the gist of it's still there, and you blush, grateful that in the low light Michael can't tell. The look brought out that deep, inner submissive part of you ... and you had liked it, oh so much. Even the thought of experiencing it again was making you wet.

Christina soon wakes up, and Michael fixes the two of you coffees before taking you to the edge of the compound. With your bikinis disposed of by the devices, and your bimbo outfits stained with sweat and cum, you decide you might as well just walk back to the cabin nude. It's not like there's anyone to see you, and it's dark outside. Michael loans you a flashlight and gives each of you a squeeze on the ass and a kiss goodbye.

"Come back tomorrow, around one," he says, "and we can do it again."

"That'd be ... nice," you say. Suddenly your vacation isn't looking like such a waste after all.

You and Christina make it back to the cabin without incident. As Michael predicted, there's no sign of your father still, and when you go inside, it's just as you left it.

The cabin's shower is located outside, apparently for better drainage. Whatever the reason, it's rather exposed, and the night air has a distinct chill to it. You and Christina shower quickly, but after you get back inside, you both find you're not quite ready for bed yet.

"I can't believe we did that!" Christina says. "I've never felt like such a slut, not even when Pete persuaded me to suck his brother's dick while he fucked me."

Ah, Pete and his brother. Those were good times. "You were so hot back there. And I can't believe you let him fuck your ass! Is it sore?"

"A little, maybe...." Christina's face turns dangerous. "Nothing a few kisses wouldn't fix."

You didn't think of yourself as bi per se. You and Christina usually only made out in front of others, usually guys, for kicks. You had slept nude in the same bed together ever since arriving on the island and not once had you had sex ... until now. Now, you understand your desires, and you know that you and Christina--and Michael--are going to have a very sexy vacation indeed.

As you kiss Christina's pert ass and then let her go down on you, you reflect how your island vacation has turned out a lot better than you thought it would be.