Endurance training, of course.

"Well then, if you're done eating, get over to the couch, little pervert." As she began gathering up the plates, Anne gave James a stern look. "And you are not to lose your erection, do you understand, young man? And neither will you cum."

"Y-yes, mommy!" James twitched as his mother's foot slid off his enormous pole, the first drop of pre beginning to build at the tip. While Anne disappeared into the kitchen, James struggled to his feet and turned towards the couch, only to slam his mammoth pole into a table leg. And while he was hard enough to make the table jump, it also hurt like the dickens, so the over-endowed young man still stood next to the table, wincing and trying to maneuver his giant prick out into the open,

"You do see how ridiculously impractical that thing is, don't you?" The comment sounded much less biting than before, and Anne pushed a shaker into James hand before taking the casserole into the kitchen, calling back to her son: "Oh, and do drink up, you need your fluids!"

Once James had made it to the couch, he found out that the shaker contained one of his mother's sports drinks - thick, sweet and full of proteins and electrolytes. Exactly what his body needed. Of course, he'd also taken long enough for his mother to be done in the kitchen and join him on the sofa, in her hands a big bottle of lube and a belt made from soft fabric. James neither knew where she had gotten these things nor what she was planning with them. But judging by the smile tugging at Anne's mouth, it would be... exciting.

"I've been shopping while you showed mommy your determination," Anne explained, putting down the belt on the coffee table next to the couch before opening the bottle of lube as she sat down to James' left. "We will be using this first, and the belt later, I expect. Unless you taught yourself some discipline while I was away, and I think we both now that this is above you. But don't worry, mommy will take care of everything."

James swallowed, his heart beating so hard that his gargantuan cock visibly pulsed where it pressed down heavily on James' nuts, sandwiched between the churning orbs and his enormous breasts, their nipples easily equally as hard. His mother switched on the TV and started up a streaming service with her free hand.

"Now, what should we watch, naughty boy? Something fun? Something... exciting?" Flipping through the movies, Anne brushed her leg against James' mighty pole absentmindedly - or rather, she tried to give that impression, but James was so incredibly hard that his cum howitzer jutted upwards at an angle, so Anne had to lift her leg high, as if she was doing yoga, which was rather befitting her wardrobe. And obviously on purpose. "Ooh, how about that one? USA Pastry? I hear it's fun and exciting! What do you think, little pervert?"

"Ah, uhm... I..." With pre already rolling down the underside of his cock, Anne's foot made her son's shaft lurch with pleasure and left him precious little mental energy to form words.

"Oh, why not. After all, it's not like you will be able to pay much attention to the movie. Mommy's gonna make sure of that."

Anne started the movie and put down the remote, squirting a thick glob of lube into her right before she began to slide her slick hand over the top of James' cock. Suddenly, the movie's intro was reduced to background noise as James' world seemed to shrink down to his mother's soft hand on his shaft.

"Ah, is mommy's little fucktoy enjoying himself? A little too much, maybe?" Anne's hand was now smearing the lube over James' cock with circular motions as her son's head lolled back, all strength sapped by the sensations. "Don't mistake this for a reward, little pervert. This is the first step in your training - you will not cum until this movie is over, no matter what mommy does to you. And since I know you will need help with that, I brought this."

Anne withdrew her hand and picked up the fabric belt, pulling it taut between her hands with a snap. James swallowed again. Yes, he'd held out all day, but that had been with minimal stimulation - and had left his libido rather overcharged. As his mother's attention returned to the movie and her hand to his shaft, James grit his teeth to at least try and fight the sensations threatening to rob him of his self-control. Not that his mother was making it easy for James.

"Hm, the theme is catchy, at least..." The music barely registered with James as Anne kept stroking the underside of his cock with her foot and the upper side with her right hand, straying to the swell of his enormous breasts or his oversized, plump nuts every so often. "Have you seen this one before?"

"Ngh--guh!"

"I'm just asking because you don't seem to be paying attention at all, little pervert." Anne lowered her leg, the strange position having sapped her strength, and rested it on the massive nuts bulging out over James' leg, the heat of her impossibly soft, plump thigh making the enormous orb twitch as Anne trailed a winding path over the lube-slick skin of James throbbing fuckpole with one finger. "Are you really that much at the mercy of this ridiculous... thing?"

Her foot brushing against her son's right leg, Anne gripped James pulsing pillar of manmeat and tried to jiggle it from side to side, only to slip off the slick skin - of course, with how unbearably hard it was and with her fingers barely reaching halfway around the girthy monster, Anne would have had a hard time shaking her son's mighty member even if it had been bone dry.

"Muh-muh-mommyyy~..." James bucked his hips against his mother's soft thigh, the underside of his cock sawing along Anne's yoga pants ever so slightly. The combined weight of his assets and with her leg effectively on top of him, he barely managed a few inches of movement. But even that much was exquisite stimulation, thick globs of milky pre running down the length of his cock and dripping down on his mother's favorite fluffy rug.

"You do remember that this is not about your pleasure, naughty boy?" Tutting, Anne shook her head. "We barely made it past the intro! Don't pretend I can't hear your fantastic...-cally oversized testicles gurgle with seed, filling up for mommy... after a few minutes of me stroking you! I would be so disappointed in you if I hadn't expected you to have so little control! But as you can't seem to help it..."

With James in a lustful stupor - and of course weighed down by his genitals and breasts - he couldn't react at all as Anne wrapped the soft fabric belt around his shaft just where it protruded from between his tits and balls. But as she pulled it tight, James couldn't not react.

"Nnaaagh!" Pain and lust mixed into a concoction that made James jaw hang slack, his cock throbbing and pulsing impossibly hard - hard enough to make his breasts jiggle and his nuts jostle. The stream of pre had slowed to a trickle, unable to get past the vice of the belt. James could feel it backing up into his churning nuts, making them swell visibly, if slowly. "Mommy, it hu-hurts!"

"Does it, little pervert?" Bending forwards, Anne planted a kiss on her son's gargantuan, swollen cock - a small peck that turned into full-on frenching as Anne slurped up the salty pre on James' shaft. The pulses of pleasure running through his enormous schlong made James' pain that much more bearable. In fact, the small measure of hurt only enhanced the sensations. As she sat back up, Anne snuck in a short lick on James' desperately hard nipple that had her son gasp with lust. "But you can bear it, right? For mommy?"

Gritting his teeth, panting against the pleasurable **** that made his mind reel, James realized that there could be only one answer.

"Y-yes, mom!"