You moaned and winced as your mom managed to eke another dildo out of your dick, setting it down right next to the others.
"Only a couple dozen more to go, sweetie," your mom said reassuringly, already beginning to stroke your cock some more.
You, however, were already coming up with more morphs to do, and decided on one that was in a similar vein.
Closing your eyes, you did your best to focus despite your mother's handjob, and used your power to allow you to produce a new kind of dildo.
Your mom stopped stroking you. "Oh, I just remembered," she began, turning to the wagon full of boxes. She started throwing some aside, looking for something toward the bottom. "Aha," she announced, before pulling up a box that was much larger than the others. It was over two feet long, and was covered in a high-res image of a black and pink-mottled horsecock dildo. Along the length of the box in Medieval-style lettering was the word Mare-Breaker.
"We received an order for a Mare-Breaker, as well, honey," your mother told you, placing the huge box on the bed. "We should get that one out of the way, don't you think?"
"Oh uhhh, sure," you answered.
"Okay, on your hands and knees then, love."
You hesitantly did as she asked, with a general idea of where this was going. You were the one who initiated the morph, after all. You were now atop your bed on your hands and knees, with your pale boyish ass facing your mom.
She smiled at your ass. "Now, let's get you ready, dear."
"Umm, get me ready ha-owwwwwww!" you moaned, interrupted by your mom diving her tongue into your asshole. She hungrily and voraciously slurped at your dark hairy anus, writhing and swirling her tongue to cover every wrinkle of the sphincter in her saliva.
"Mmmmmm," she hummed, clearly enjoying eating out her son's ass. You could do nothing more than bite your lip and look back at her as she continued to ravage your virgin hole. You had no idea your ass could feel this good.
After another minute or so, your mom finally freed her face from your asscrack, panting with exertion. Your backdoor was soaked in saliva, drops flowing down your taint until they dropped off your balls onto the bed.
"There we go!" your mom beamed. "Now it's your turn dear! Go ahead and start pushing, I'm right here, sweetie."
"Uhh, okay," you replied. You weren't sure exactly what she meant by pushing, but judging by the location in question, you figured it must've been similar trying to force out a big shit.
You tightened up your gut and forced downward, causing your bowels to shift inside you.
Suddenly, you felt something... there. Something solid and BIG was in your guts. You readied yourself before attempting to push out the intruder again. Steadily, you could feel the weight and pressure lowering itself inside you. It did so slowly without any effort on your part, as your colon was doing its work to pulsate around the object and carry it to the exit. But it would take too long that way, so you opted to keep pushing like your mom asked.
With another push, you gasped as you felt a wide flared tip press against the inside of your sphincter.
"Oh, there it is, honey! Keep going!" your mom rallied.
Beads of sweat lined your forehead. Your whole face was red. You didn't even notice that another dildo had managed to plop out of your dick thanks to the force of your efforts.
You pushed one last time and groaned as you felt the wide flared tip stretch open your asshole from the inside. About two inches of its length slid out of your rectum, and your mom immediately wrapped a hand around it.
"I've got it, dear, don't worry about pushing anymore!" she told you. "I'll just pull it out, just relax!"
You did your best to stay calm and keep your sphincter loose so she'd have as little resistance as possible. However, it became much harder to stay relaxed once she started pulling.
Your mom gradually managed to work the giant horsecock dildo out of your ass, one inch at a time. Gushes of an unknown lubricant poured out from around the massive faux-meat.
Your whole body shook with exertion as she continued to pull and pull, however the feeling was still altogether rather pleasurable. Finally, your mom got all 24 inches of the thick veiny shaft out, with nothing left within you but its huge silicon balls.
"Deep breath, sweetie," your mom instructed lovingly.
You nodded back at her and did so, just in time for her to use all her strength to yank the dildo's firm rubbery nutsack from your gaping asshole.
You cried out and fired yet another silicon copy of your dick from your cockhead as the monolithic monster was finally fully freed from your guts. You collapsed onto the bed with a huff, laying atop the two dildos you had birthed thanks to your hard work.
"Oh, wonderful, honey!" your mom cheered. "Really fantastic work! I know it takes a lot out of you, but these horsecock dildos are such a marvel!"
You panted and murmured sleepily, "Any time, mom."
You looked back and finally got a look at the complete Mare-Breaker. It truly was enormous, a full-sized anatomically correct horsecock for some kinky daredevil you had just willed into existence. You hoped they'd enjoy it.
The beautiful woman placed the two-foot wobbly schlong down on the bed before patting one of your buttcheeks lightly.
"Go ahead and take a break, honey, we can continue later, okay?" She suggested.
You were already starting to fall asleep. "Okayyyyy," you responded quietly, drifting off into unconsciousness.
You awoke a couple hours later... what happened next?