...continue the bombardment?

Of course, you can't let up now that Sarah is falling under your spell. Sliding your hands up, you hook you fingers into the waistband of her shorts and slide them down, retaking your place on her gorgeous ass with one less layer of clothing in the way. Sarah moans around your tongue, and you feel arousal dampening your crotch as you begin to leak slime copiously. You'll have to enslave your mother when she gets home, as the living room will be a slimy mess by the time you're done taking Sarah as yours. Inside your womb your slugs wiggle about eagerly, ready to fulfill their purpose and take over the needy girl in front of you.

You can't help the moan that you let out when one of your larger offspring slides down into your pussy, churning and wiggling down your sensitive canal towards the soaked panties you wear; too focused to holding Sarah close, you can't help but wiggle slightly when it oozes out of you and into your underwear. Squriming along your taint, you have a feeling you know where it's going before it gets there, your thrill level rising as it begins to worm it's way between your enhanced, firm ass cheeks. A moment later, and your energetic offspring is pushing at your asshole insistently, and you try to part your legs to give it any help you can despite your current focus. The alien slug in your head, the thing that makes up so much of the new you, has done a mutagenic number on your brain, and your ass doesn't reflexively clench, instead yielding smoothly to the fat, incessant interloper trying to get back inside you. The sensation is...not unpleasant, but a second later it becomes thrilling to you, as a part of the human brain mutates into further depravity - in time, you distractedly think, you probably won't find much of anything that isn't arousing!