You wake up first, the muscles of your stomach aching in a pleasant way. Thinking back over what happened you're at first disgusted at what you let happen, but that quickly passes when you recall how fun it was. Being penetrated like that was strange, but it also felt amazing. The thought alone is enough to make your minuscule cock twitch to life and your nipples perk up.
Not wanting to wake Stacy up just yet you try to pleasure yourself, but due to what you've done to your cock you're unable to do much about the arousal you're feeling. As you rub your cock you find that you're clenching your muscles, recalling what it felt like to have Stacy thrusting inside you. You never would have believed it, but you want to feel it again.
Then it hits you, the magical flashlight diminished your sex drive when you used it to make yourself less masculine and this must be a side effect of it. As the instructions said, you're aware of the changes to reality that have taken place, but you're still effected by them.
Now that you know this you're tempted to change everything back to normal and you start doing just that.
You play with the blue settings, shining the light on your cock until it's back to its normal flaccid size of four inches. Realizing that you don't have to stop there you decide to turn the light up to a slightly stronger setting and shine it on your cock again, watching as it grows another inch. Curious you put the light down and start to stroke yourself with one hand, using the other to play with your large d-cup breasts, rubbing and groping them. before long your cock swells to its new length, what you estimate to be a rather impressive seven inches. You're tempted to increase its size further, but you realize that it might be a bit too much to have such a large cock. Maybe later you'll make it bigger, but for now you're happy with giving yourself above average endowments.
Strangely enough you still recall how good it felt to get fucked up the ass and though you're not eager to try it again you do think that it might be fun to return the favor. You've always wanted to try anal with Stacy and now you have the perfect excuse, especially since she now has a cock and balls and no pussy.
Thinking of Stacy's abnormal endowments you smile. Since the light will adjust reality so that no one thinks any of the changes are out of the ordinary you figure that you might as well have a little fun, and once you're done you can set everything back to normal. Anyway, you are curious to see what the maximum blue setting can do.
Turning the light to its highest blue setting you shine it on your girlfriend's cock and balls. Before your eyes her cock begins to snake out further, growing longer and thicker, swelling under the magic of the light until it finally stops growing at an obscene eight inches flaccid. You can't even begin to think of what it would look like erect, and her balls are expanding to match her massive cock, inflating until they're the size of tangerines.
For good measure, and to make what you want to do seem a bit less gay you switch the light to the opposite extreme and shine it on Stacy's chest, causing her breasts to swell immensely until they're larger than yours, a size you guess might be a double d-cup or larger. Her nipples stick up half an inch long, and putting the light on her night table, you bend down and take one of her nipples in your mouth.
Stacy sighs happily as you flick your tongue over her nipple and opens her eyes. She shifts under you, bringing her hand up to tease the nipple that you're not attending to, "I wish I could always wake up to this."
You feel her cock brush against you as it begins to harden and giving her nipple one last good suck you sit up, "My turn."
"You want me to suck your tits?" she laughs, fluttering her eyelashes at you and she brings one of her hands down to fondle her balls.
In a playful mood, you shrug, "Sure, that's a good start."
Oh so slowly she leans in and sticks her tongue out, flicking its soft warmth against your erect nipple. The sensation makes you gasp, then she takes your nipple in her mouth and sucks hard, causing you to moan and squirm. Her breasts rub against you as she does this and when she shifts position you feel her rock hard cock bouncing between the two of you.
She pulls away and licks her lips, "You taste so good. I could just eat you up."
For a moment when she sits up you get a good look at her cock and realize that it's a foot long, maybe more and so big that she can't wrap her and all the way around it, which you can tell because she's slowly stroking herself.
"Don't worry," she sighs, letting go of her cock to run a finger across your cock head, wiping up a dab of pre-cum and bringing her finger to her mouth to lick clean, "I know what you want to do to me."
Wiggling her cute little butt she turns to present it to you and without hesitation you plunge your cock into her tight asshole. As you slide in her muscles clench around you with almost painful force.
"Ahh!" she lets out a little gasp and then starts riding your cock, clenching her muscles in time with your thrusts, "I love feeling you inside me."
She squirms and writhes as she guides your hands to her breasts, "Squeeze my tits and fuck me hard!"
Never before has she talked dirty to you and you're happy to oblige.
Lost as you are in pleasure as you thrust into her harder and faster, bringing her to new heights of pleasure, you can see that she's using both her hands to frantically stroke her cock as it bounces against her stomach.
"Oh! Oh! That's it! Right there! Hard as you can!" she pants, "Fuck me good with that big cock of yours! I want to feel you cum in me! I want you to hmmmmmm..."
Her words trail off in a muffled hum as she bends down to take her own cock head in her mouth.
Her moans and squeals of pleasure are muffled as she sucks herself off, and to your surprise you find the whole situation amazingly hot.
Before long you feel yourself reaching orgasm and plunging in as hard as you can at the same time Stacy is wracked with an intense orgasm. Slurping and panting she struggles to drink up all the cum her enormous balls churn out even as you shoot your load in her.
When you're done you start to pull out, but she shakes her head.
"No," she gasps, finally able to release her cock as her own orgasm ends, "I want to feel you go soft in me. I love the way your cock fills up my ass too much for you to pull out now."
"Okay," you sigh, wrapping your hands around her to give her breasts a squeeze, hugging her tight to press your own breasts against her back.
"You're so good to me," she snuggles against you as she speaks, slowly relaxing her muscles to let you slide free.
A few minutes later she's dozing peacefully, exhausted by the rough fucking you gave her and the massive rush of orgasm from her huge cock.
This leaves you with the perfect chance to use the flashlight again...