Not all of her, though...

"Heya," she says, kissing you on the nose. "Nice to see you again."

"Same to you," you chuckle, looking over her gorgeous, familiar form. "You've lost weight, babe."

She giggles, and pokes your stomach. "So have you. Although...looks like you're still a little pudgy."

Looking down, you can see she's right. You're not as huge as you were, but you still have a noticeable pot belly. When you put your hands on it, there's the unmistakable feeling of Sally's slime beneath the surface. She must have left about half her mass inside you.

"Ah," you remark. "You're right. Don't you want...the rest of it?"

She shakes her head playfully. "Being big is definitely fun, but I can't spend all day like that. You've never minded it before, so I figured I'd let you carry some of my excess mass."

You hesitate for a moment, looking from your stomach to her. She must have caught your moment of doubt, because she pouts at you, hurt in her eyes.

"Unless...you don't like having me inside of you..."

Oh, those baby blues. You really feel like you shouldn't let her have her way so easily, but...

"Fine," you say. "But not for long, alright?"

"Oh, thank you sweetie," she giggles, kissing you on the cheek. "It's only for a day, anyway - your body heat should be enough to dissolve it in that time."

"I think I'll keep my dick, though. That's one bit of extra mass I don't mind carrying."

Slowly she draws her slime dick out of you, breaking the connection to the slime inside your stomach. Her member is still slick enough to glide out of you smoothly, while also being thick enough to massage your insides on the way out. You sigh at the pleasant sensations running through you, and at certain points she even lunges back into you, making you gasp.

"I just...love this ass," she sighs. "It feels so nice inside you."

It takes quite a while to draw the whole thing out, especially with her playful thrusting, but eventually her cock is fully out and resting against your own. Shockingly, it's still hard - and there's quite a bit of extra mass on it, too. It's about ten inches long now, looming over your own flaccid dick and pulsing steadily. It's a little intimidating, yes...but not in a bad way. You're still getting used to the whole 'girlfriend with a dick' thing, but there's no denying how good that big cock felt in you.

You're even considering asking her for another round when she suddenly leaps off you." Oooh my gosh, I feel so much lighter like this!" She gasps. She leaps into the middle of your room and immediately begins doing stretches, flexing her fit, lithe body (and her still-stiff, bobbing cock) in front of you.

As nice a view as Sally is providing you, you have your own mass to consider. You put a hand on your rounded stomach and slosh it around a little; the feeling of slime sloshing around inside makes you a little queasy. "Well, I guess if it's only for a day..." You mutter. "Can't say I'm too crazy about waddling around with a pot belly all day, though."

"Oh, don't worry about that," she says offhandedly, still absorbed in her stretches. "It'll redistribute itself soon enough."

That gets your attention . "Redistribute? Sal...what does that mean?"

"What, you don't remember?"