Sealing the deal

In a cacophancy of moans and slurping sounds, both parties feverishly rubbed the fresh batch of cum into every coated surface. Mike flicked his tounge around his mother's plate-sized areolae as he rubbed the sticky substance all over the top of her massive jugs. Melissa assisted by massaging the slimy droplets of magical cum into the underside of her breasts with one hand, and her son's balls and her own cock with the other. Keeping her mouth busy, Melissa also slurped and sucked on her son's cock head as they both rubbed each other dry. Once all of the juices had been fully absorbed, Melissa pulled Mike by his forearms into an upright position, preparing for the next onslaught of growth.

Without a moment to spare, Mike's eyes boggled as his mom's already oversized breasts surged bigger. They quickly filled up all the available space between their linked arms, bulging up against his upright chest. Mike's cock twitched as his mom's swelling cleavage mounted increasingly warm pressure around it. Somewhere in the back of his mind, Mike could also feel a secondary pressure surging upwards through the soft flesh of his mom's jugs.

Bursting through the upper layer of Melissa's cleavage, her cock surged mightily skyward. It parted her huge boobs as it thickened and lengthened up towards her chin. Mike watched in awe as his mother's cock surpassed his own in length and girth. As it surged higher, he felt his mother cup his balls beneath her ballooning tits. The heavy nuts swiftly parted her pawing fingers and approached the size of softballs as they filled with more seed.

Meanwhile, Melissa's cock had grown enough to reach just below her mouth, and she wasted no time in craning her head down to fellate herself. She impaled her maw onto her cock as far as she could, bobbing her head up and down. Mike could see the echoed ripples of Melissa's lips reverberate down his own cock as it rested between her tits next to her head. Mike groaned at the erotic sight and beat his meat faster into his mother's massive underboobs.

Finally, Melissa had enough teasing. Pushing Mike onto his back, she mounted the bed and stood above him. She roughly grabbed Mike's cock and guided it past her fat balls over her wet slit. Using her quads to squat down, Melissa eased her son's cock into her mature pussy. Her mind melted and she blurbled in ecstacy as she experienced both his massive rod penetrating her and the phantom echo of his penetration. Mike was equally blissful as he experienced the sensation of properly penetrating his mother for the first time. Squatting all the way down to her knees, Melissa took his entire girthy length using her magical elasticity. Her breasts smothered Mike's face as she bottomed out on his slicked hard cock. Melissa's own cock rested on top of Mike's buried head, wedged between her ginormous titties. With the energy of a wild animal, Melissa pistoned her hips up and down as much of her son's length as she could while kneeling. Both participants cried out loudly as intense pleasure wracked the millions of additional nerve endings grown in their enlarged organs. Mike slapped and groped his mom's heavy ass with one hand as she pounded away at him and fondled her full balls with the other.

That was the final straw. Mike felt his mom's pussy tighten around his cock as another orgasm barrelled through her body. Melissa locked onto her own cock head as it began to erupt between her breasts. Mike thrust furiously into her thick thighs and bottom, clapping loudly as squishy flesh collided over and over. He erupted inside his mother just as she too pulsed ropes of thick semen into her own mouth. Both pairs of engorged nuts blasted an unending torrent of cum into Melissa's pussy and mouth. Overflowing sticky seed escaped Melissa's lips and slopped onto her massive breasts.

Panting hard, Mike desperately tried to calm his racing heartbeat. Melissa shimmied and bounced gently up and down Mike's cock, continuing to fellate herself and fuck Mike. Both engorged cocks rubbed the magical semen into the inside of her mouth and pussy as she continued grinding both poles. Trying to help out, Mike reached up and rubbed the excess cum into his mother's humungous jugs.

As before, Melissa's rack swelled bigger. Mike's head was buried in breasts quickly approaching the size of yoga balls - but that wasn't all. Melissa's entire body seemed to be rising away from her son. Mike gasped a deep breath as Melissa sat up, freeing him from her massive soft breasts. She grew uniformly into an amazonian goddess before him. Her thighs, draped either side of Mike's waist, steadily reached the thickness of his entire torso. Melissa had to be 9-10 ft tall now, Mike giddily estimated.

"Holy fuck," he breathed, staring up at the truly gigantic spherical breasts suspended above him.

"Aw honey, Mommy still needs some more!" Melissa pleaded, gazing down at him.