April needs to catch up on her dose

Moments after your cum-stained father staggers out of sight, April returns with a white plastic tub in hand.

You and Michael grab some juice and take a well-deserved break while she mixes up the medicinal drink. Your eyes are glued to her round ass while she bends over to pour the ingredients into the blender, and you find yourself getting hard again.

"So, John," your brother-by-adoption says after a while. "Since you administered Dad's 'special' dose, can I do Mom's?"

Glancing over, you see that he's staring at his mother's rear end too, and he's even harder than you are. "Sure, dude. Go nuts."

It's at that moment that April turns around, a blender full of smoothie in hand. "Okay, it's--Ah! Michael!" Her son pounces on her, nearly knocking the plastic jug from her grasp as he lifts her up onto the kitchen counter and spreads her legs. "Careful, honey!"

He merely grunts in response, lining up his cock with one hand and snatching the blender from her grasp with the other. He slips inside, pumps a few times, then pushes the spout of the container up against April's plump lips. He tips the jug high in the air, and she's **** to swallow huge gulps of the drink to keep up.

"Aah-mm... Mmm..." She manages to chug most of it; only a thin trickle of the pinkish-yellow liquid escapes to drip down her chin.

"Mom's" had more than enough practice, you think, stroking yourself a few times as you watch her gulp down the potent ****. April's moans grow louder, and her hips gyrate to meet her son's thrusts; the aphrodisiacs must be kicking in already.

"Fuck, Mom, you feel so good," Mike pants, tipping the last of the smoothie into her mouth before dropping the blender in the sink. "How does it feel?"

April licks her lips before replying, her eyes smoldering as she meets her son's gaze. "I--I'm on fire. My whole body... Fuuuck..." She gasps as Mike takes hold of both of her breasts, squeezing and kneading them as he plows her. "Oh God, I think I feel them getting bigger..." She takes a deep breath, blinking a few times. "...You boys are having fun, right? Is Mommy doing okay?"

Huh... Sometimes it's easy to forget that April does all this just to keep her boys satisfied... Although I'm sure the aphrodisiacs blur the line between "duty" and "lust" a bit.

Mike seems too caught-up in using her pussy to respond, so you chime in. "You're doing great. You drank that even faster than Dad."

As if on queue, you hear a heavy thud from the ceiling. After a moment's pause, a series of smaller thuds begins, as if someone's stomping repeatedly on the floor above you. Ah... Speak of the devil. I guess the upstairs bathroom's right above the kitchen, isn't it?"

"Fuck me harder, baby," April moans. "I can feel you tensing up. Cum inside Mommy... C'mon... FuuUUUCK!"

April's whole body tenses up, followed quickly by Mike grabbing her hips and burying himself balls-deep inside of her. "Ungh, oh God," he grunts loudly as he unloads, leaning forward to bury his face in--

Woah... There we go. While Mike was groping his mother's chest, you failed to notice how much she was growing beneath his hands. Her breasts are now a perfect match for Peter's new assets, jutting forward like two pale-skinned basketballs.

Mike rests his head in her astounding cleavage as he comes down from his orgasm, still pumping his hips a little. After coming to her senses, April runs a hand through his hair and pulls him in closer. "That... Was... Incredible," she whispers, wrapping one leg around her son's body. "God, I love this stuff... And I love you, too."