Nope, creampie for Adam.

Monica struggled against the tight embrace of Adam's pussy, but his twitching walls sucked her back in. The intense feeling made her double over, her head inches from Adam's trembling back. Gritting her teeth, she tried to stave off her orgasm a little longer, but it was in vain: The little movements she managed only provided additional stimulation and with a hoarse cry, she blew her load inside of Adam.

"I'm sorry, babe!" Monica mewled, bucking her hips wildly, spurt after spurt of cum unloading into her son. The feeling of hot jizz shooting into him made Adam's whole body shudder, his climax not subsiding. His mind was too far gone to care, and he kept slamming back his hips against Monica's still-hard cock.

"Oooh, mum! It's so much... so hot... mmmh..."

Adam kept playing with his still-swelling breast, rolling the nipple between his fingers, and rode out the blissful feeling, panting with lust and exertion. As he slowly recovered, fear began to creep into him: Another load, this time in his pussy? This was bad. Really bad. But before he could go into full-blown panic mode, a warm sensation began to spread from his womb. It filled his entire body, washing away all his worries. Feeling his mother slowly slide her spent dick out of him, he turned around, took her head in both hands and pulled her into a passionate kiss.

His newly plumped up lips proved exceptionally kissable - and sensitive. Moaning into his surprised mother's mouth, he began probing with his tongue until Monica's resistances melted away and she wrapped her arms around him, kissing back hungrily. Their tongues intertwined, the intense makeout session causing both of them to moan hotly. Still, Monica's dick only gave a weak twitch; after three orgasms in quick succession, it was thoroughly spent. Adam could feel it press against his legs - and further up, he could feel his expanding tits squish against his mother's smaller ones.

After a while, Monica broke off the kiss, face flush and breathless:

"You... you're not mad I came inside, sweetie?"

"Why would I?" Adam answered, untangling himself from their embrace and taking a step back to show off his body, "Look at me!"

Monica took in her transformed son's bombshell body as he was giving her a sultry look with eyes in a smoking hot face with high cheekbones and puffy lips. His tits were huge, bigger than his head by a good bit, drooping in a perfect teardrop shape almost to the end of his rib cage, areolas double the diameter of a quarterdollar capped by nearly thumb-sized nipples rising proudly above them. Letting her gaze slide lower, she noticed how wide his hips had become. Although Adam stood with them cocked to the right with his hand resting on it, it was obvious that they surpassed the width of his shoulders by quite a bit, and his thighs had grown to match - they were ripping the seams of his pajama pants in some places. Talking of pajama pants: Monica doubted he'd be able to pull them over his ass. Each cheek had swollen to almost the size of a soccer ball and jutted out over his thick thighs.

Adam smirked as his mother ogled him. He loved the effect his body was having on her. This was what he had always dreamed of - being irresistible. So what if his fantasies had always contained a cock that was attached to him or that a tiny part of his mind kept screaming that this was the effect of his mother's Growth-X enhanced cum? He. Was. Smoking!