Micaela can't, but James needs some encouragement.

Seeing the puckered, throbbing nipple before her, capping a still swelling, soft breast, apparently was too much for Micaela. As she scooted forwards on all fours, looking at Anne pleadingly, James looked on dumbfounded. Was his new girlfriend about to cheat on him with his mother?

"Mmmh, you wanna suck on 'em?" said mother teased, "You wanna suck on my titties, Micaela?"

"Oh yes, please," the latina begged eagerly with shining eyes, and Anne giggled, wrapping one hand around Micaela's head and pulled her to her closer, arching her back to give better access. Micaela eagerly wrapped her lips around the half an inch wide nipple presented to her, and Anne threw her head back, a sultry moan rising from her throat.

"Huh--bu--wha--?" James stammered, unable to process what was happening. Arousal was flooding his brain, but this was wrong! This was his mother before him, technically in the first stages of lesbian sex, gasping, moaning squealing in bliss, and yet here he was, his own throbbing nipples pushing into his shirt, pulsing with his quickening heartbeat, pussy twitching and drooling, but his cock still woefully soft. He should not be feeling this way from looking at his own mother! No matter how big her tits were getting. And why were they getting this big, anyways? The pills hadn't given him a rack that huge. Not that he wanted it, or any...

"Hnnoooh, James, baby, won't you, like, help her? I've got two boobies, you know?" Anne interrupted his thoughts, beckoning him closer with her free arm, the other still pressing Micaela into her swelling bosom, which was now bigger than either of the women's heads.

"I--what? Mom, I can't!" James protested, "You're my... well, my mother!"

"Aww, please, dear--ah!" Anne replied, "Didn't you use to suck them, like, super-eagerly when you were younger?"

"Yeah, when I was a baby!"

Micaela giggled into Anne's tit, setting off an impressive boobquake and a subsequent appreciative moan from the older woman.

"Aannh, but it's just, like, skinship... haaah... between mother and son," James' mother begged, "Pleeeease, Jamie, suck my huge titty~!"

James could barely think straight due to the arousal, and his mother's admittedly flimsy arguments were whittling away at his crumbling self control. The final straw was the look on his mother's face - flush with arousal, eyes half closed in bliss and lips slightly parted, a soft, needy whine calling out to him. Crawling over, James was welcomed by his mother's arm, wrapping around his head and pulling him into her welcoming bosom, Micaela's shoulder rubbing against his. James crammed the enormous nipple into his mouth and began flicking his tongue over it, causing his mother's moans to rise in volume sharply.

Unable to resist the siren call of his own pussy, James slid one hand up his thighs and between his legs, his cock flopping weakly against his wrist. Keeping up his clumsy sucking and licking, James began teasing and rubbing his swollen labia with two fingers, electric shocks running through him, his own moans muffled by his mother's fat nipple.

"Mmmh, just like that, baby," Anne cooed, "suck mommy's titty. Like, you two are making me sooo wet..."

Her son, meanwhile, felt his own wetness gushing over his hand and drip onto the tiled floor, wet squelching sounds coming from his pussy as he slid two fingers between the lips to rub the sensitive folds up and down. He closed his eyes in bliss, still sucking rhythmically on the sensitive nub in his mouth. Anne's tits had to be twice the size of his head, only now slowing their growth. Despite their size, they remained remarkably perky, and they were so soft! Leaning forwards, James felt his whole face engulfed by the expansive boob, his whole body shivering with arousal. He'd always had a weakness for huge boobs, and getting to play with even one of the huge orbs was like heaven for him - even if it was his own mother's.

The sounds of Micaela moaning and sucking next to him, the heat of her body washing over him where their shoulders touched. As James' questing fingers between his legs found the entrance to his quivering tunnel, he felt his lust rising sharply. Pulling back from his mother's tit, James sucked in a surprised gasp of air through his nose, and, after hesitating a fraction of a second, jammed his fingers into the twitching canal. The unknown sensation was too much for James, and he collapsed into his mother's lap, her nipple popping out of his mouth, pussy clamping down around his fingers, his whole body shaking as waves of pleasure rippled out from between his legs. Anne cooed and caressed his head, interspersed by blissful moans and hisses as Micaela was still sucking on her other tit.

After a few minutes of relaxing and savoring the afterglow of his first fully female orgasm, James looked up at his mother and found his view mostly blocked by her enormous breast. Slowly sitting up, he regarded Anne with trepidation. This was so wrong, but her tits were simply irresistible! Why couldn't he have--

James shook his head wildly, unwilling to continue this train of thought.