Fiona's mother comes into the room to see what the commotion is...

Fiona was in ecstasy, a perpetual state of euphoric bliss. The steel like grip, the giant's fist wearing the softest of velvet gloves, was squeezing the entire length of her 16" penis from the thick base jutting from her going like the boom of a construction crane, all the way to the bloated tip, the size and color of a deep purple plum, that was buried deep within the tight confines of the boy she loved. As her burning length began to buck, as her orgasm began to seize her massive erection, Doug's weak and light body began to jerk along with it, and he felt his neck start to snap as he Fiona's cock tried to toss him out from beneath her.

"Ahh ... AHH ... DOUG!!!"

Somewhere in the tortured tightness of his body, Doug felt the girl's amazon cock start to swell. It was thickening, expanding out and causing the screaming tenderness of his anal ring to stretch another inch further. He was blind, open eyes filled with tears and his mouth stuffed with thick duvet, drenched in his saliva, as he tried not to cry out screaming. His own penis, tiny and pathetic in comparison to the virile beast just starting to pump within him, was still erect in all of it's 6" glory. He had cum again, nothing else sputtering out from the tip, but another orgasm surged through him all the same. His mind tried to focus on it, that small and simple pleasure, to try and drown out the torrent of pain that was rising with the swelling tube of Fiona's urethra.

Hot seed churned and bubbled within her balls, they had suddenly grown larger, the skin of her bulging scrotum tight as they prepared to fire their copious load. But all of that sperm, all of her thick volume, was impeded by the sheer constricting of Doug's tiny body upon her mighty spear.

But Fiona would not be denied.

The teen giantess, her body thin, but strong, completely covered the small boy beneath it. Her huge feet planted firmly on the ground, her long toes clenching against the cool of the floor and she wrapped her toned arms around Doug's slender shoulders. It was difficult to breathe, her orgasm still rising in pitch as her cock continued to buck with no relief to the pressure that kept building with in it. Nibbling her lower lip, pushing down on the fragile form of her boyfriend beneath her, the amazon girl gave one final grunt and push. Her full sack flattened against the round, lower curve of Doug's butt cheeks, his small feet thrashing feebly against her knees and calves; if her large hands weren't holding onto his arms, he would be flailing them about in sorry attempts to escape.

All of this just to push her giant, amazon-sized penis one final half inch deeper into the older boy she was fucking. And it was enough. The base of her monster found purchase, gained what little space it needed, allowing the rising blast of Fiona's cum to **** its way up the tower of her throbbing erection.

Deep within him, Doug felt the tip of her mushroom head begin to swell. Her shaft was so thick, the length of it reaching so far, he swore it was in his throat. He tried to cough, expel the intruder, but he knew it was in vain. There was no getting away. Fiona was too big and too strong, he couldn't even move from beneath the bulk of her thin, but giant body. And now there was something new, something warm, almost hot, and she was pumping it into his tiny form.

Doug felt bloated, the immense rod of hot flesh spurting pump after thick pump of warm love into his body. The once firm bulge of his girlfriend's large penis that stuck out from the toned plain of his stomach, was slowly being replaced by a swell. A light rise from waist to the bottom of his rib cage, flattened as her weight pushed him onto the bed, but he could feel it slowly growing bigger as her orgasm ever unceasingly continued. It didn't seem to want to end.

Finally, after what seemed like an eternity, Fiona's spurting cock slowly began to subside into fits of impotent pumping. Her sensitive flesh twitched and spasmed, lightly throbbing as it enjoyed the warm and wet confines of Doug's tortured ass. She collapsed on top of him, pushing out the air from his lungs, and the small boy had to shake his head to free himself of the falling hair from her long, blonde tresses, that felt across his vision.

"Honey?"

There was a voice from outside in the hall, Doug's heart skipped three beats as he looked up at the door on the other side of the room. Even if he wanted to move, there was no chance of it.

"Is everything alright in there? I thought I heard yelling."

A quick knock, the sound of a doorknob turning, and the door to Fiona's room creaked open. No light came from beyond it, the sun blocked out from the open windows by the frame of a woman that filled the doorway with her size. At 7'6" in height, Marie had to bend down considerably to fit through the normal, 6'5" door. Her toned legs bent, shifting slightly, as she stooped down to squeeze through, before standing up to her full and impressive height to see what was going on.

Platform flip-flops were wrapped tightly around her massive feet, granting another 2" in height that she did not need, and Doug could see the fresh manicure on her long toes as they stuck out a little bit from beyond the bases of her size 18 footwear. They slapped loudly against her smooth heels with every step that made the floor shudder lightly with her weight. Marie's legs were long and tan, her skin lightly freckled with the evidence of many summers, but still had that deep and rich color that only barely showed its age. A small gap separated her thighs before trailing up to a huge bulge wrapped tightly in jean short shorts that pushed outward at the straining brass zipper. The top stud was undone, the woman's hips a bit too wide to allow her shorts to fully close and Doug noted a hint of lace panties peeking out from behind the waistline.

"We ... we just ... did it, mom ... I ... fucked Dougie!"

Fiona's head raised up limply, her voice breathless and ragged from the drifting excitement. She still wouldn't move, keeping Doug in his place beneath her weight. Her hips wiggled, causing her still stiff erection to prod and stretch his rectum once again. He winced at the fresh surge of pain and a warm spurt of his girlfriend's cum oozed out from aound the throbbing seal. All he could give in response was a light grunt, drowned out by the slapping of those flip-flops against Marie's big feet as she stepped closer. Looking up, he saw that massive bulge fill his vision as she came up to the bed, and he could make out the round bulges of her full testicles, the sack firm and large. Just above it, jutting out to one side along her hip, was her soft, but long cock with the rim of her head evident. The sight of it in her tight and slightly small clothes never failed to give Doug light shivers of fear.

"Oh, my little girl! I'm so proud!" Stopping next to the bed, her crotch right in the older teen's eyes, she jumped a bit in excitement. "You're growing up so fast!"

Just above the open stud of Marie's fly that wouldn't fully close, was a dangling piece of silver jewelry swinging from the smooth rim of the amazon's navel. Her tummy was flat, lines of toned rigidity just beneath the tan skin, and the light jingle of that belly button ring seemed to taunt Doug as he struggled to look up at the face of Fiona's mom. His vision was impeded by the double swell of a pair of large breasts. They were wrapped in flimsy top, cotton stretched tight around her size, and it couldn't fully cover up her generous endowments as Doug saw the bare skin of the underside of those heavy cups and the sliver of light that peeked through between them. As they shimmied and swayed high above him as the 7'6" Marie giggled at the sight before her, and Doug realized that her nipples, unhindered by a bra, were beginning to stiffen, poking through the flimsy material of her shirt.

"You were right, mom!" Fiona was now up on her hands, pushing off of Doug and granting him slight respite from her weight. "It didn't seem like my cock would go all the way in ... but I just did what you said and I MADE it fit!"

A large hand came down and caressed Fiona's cheek, Marie was beaming with pride at her daughter and Doug could feel his breath slowly coming back to him as that monstrous organ buried inside of his ass was slowly deflating down to a more manageable size. He turned up slightly, his face burning crimson with building shame instead of the subsiding pain.

"You ... you told your mom you wanted to do this?"

His giantess girlfriend kissed the back of his neck with warm, wet lips. A jerk of her hips and her penis throbbed again, spreading apart his butt cheeks and making him wince, as Fiona slowly began to grind them while nibbling her lower lip, relishing the sensation.

"She's my mom, Dougie ... we share everything together."

"Yeah, but..."

Another thrust, her tip burbling out one final spurt inside his tender body, and Fiona giggled.

"God, he's so tight, mommy! I didn't know it would feel this good!"

"And it only gets better, baby. He's your toy to play with, to make you feel like this whenever you want. You're so lucky, Fiona."

Marie brought her hand down and cupped her bulge. Doug watched as even her long fingers couldn't fully encircle her girth and the zipper creaked as what was behind it swelled slightly bigger.

"I know, mom. I love Doug so much!"

"Well, baby..."