After Princess Cadance bragged in front of her friends about how freakishly hung Shining Armor is they demanded proof. She lured Shining Armor into a moderately awkward situation and measures him in front of her friends, perhaps even proves that she is actually capable of taking him! Kinks: Hyper cock, duh. Go nuts otherwise.

“Darling, you can’t be serious.”

Cadance’s grin stretched from ear to ear. “Oh, I’m perfectly serious, Rarity.”

“Come on!” Rainbow Dash burst out laughing. “Nopony’s that big. Not even Big Mac is - “ She cut off halfway through and flushed bright red.

Cadance raised an eyebrow. Oh? There might be something there. But she could don the mantle of the Princess of Love later. Right now, there was a bet to be won. “Tell you what: if I’m lying, I’ll buy the two of you an all-expenses-paid trip down to Las Pegasus.”

“Done.” Dash’s grin soon faded, though. “And, uh, how exactly are we supposed to find out?”

“Oh, he’s just in the next room.” Cadance winked at the two other mares. “Honey!” she called. “Would you kindly come join us for a moment?”

“Coming!”

The door to the sitting room creaked open, and Shining Armor peeked his head through. “What’s up, Cadance?”

Cadance smiled wickedly. “Oh, we just wanted to see something about you.”

Shining stepped fully through and let the door swing shut behind him. “Well, I’m right here. What’d you need?”

“To see how big you are.”

“Don’t be silly,” he said, chuckling. “You guys can see that easy. I - “

“No,” Cadance cut in, her smile growing even wider. “How big you are.”

Something in her voice cut right through Shining’s facade. His laughter died instantly. Then, his eyes darted from Dash to Rarity, and then back to his wife, who were eyeing him with looks of excitement, curiosity, and hunger, respectively.

“Nope,” he said quickly. “Nuh-uh.”

Cadance’s horn glimmered, and she slid him a foot or two closer. “Come on, honey. I’m just here to win a bet.”

“But - “

“Do it, and I’ll get you a whole package of bonbons.”

Shining’s eyes were suddenly wide-open. “The little ice-cream ones?” Cadance nodded. “Well…alright.”

He glanced around for a place to sit, and finally settled on an unoccupied loveseat. There, he plopped himself down, his legs spread wide for all to see.

“Have at it, lover boy,” Dash said, smirking. “Let’s see.”

Shining’s cheeks were bright red again. He gave Cadance a meaningful look, and she nodded in return. Biting his lip, he slowly reached down to his crotch and started rubbing in small circles around his sheath.

Rarity pursed her lips as Shining’s stallionhood plopped onto his lap. Normally, as a lady, she’d thoroughly disapprove of this total breach in propriety, but there was just some kind of a rush in seeing a married mare’s husband in all his - as it were - glory.

And glory it was. Shining looked to be nearly eight inches long, flaccid. Rarity’s eyebrow shot up into her forehead, but Dash was already saying what she’d been thinking in the back of her mind.

“So he’s a shower,” Dash said. “So what?” Rarity silently nodded in agreement.

The next thing to emerge from his sheath were his balls. Somehow, neither mare had noticed the obvious bulge beneath his stomach, but when Shining’s testicles dropped below his crotch, each one gasped. Shining’s nuts were the size of grapefruit, and each one bobbed beneath his rising cock. The sloshing inside of them was audible. The sheer amount of cum inside of each -

Rarity gave Cadance a wide-eyed look. The princess just giggled.

Shining continued to rub. His cock, now twitching and occasionally leaking a few drops of pre, had passed ten inches handily and was now somewhere in the vicinity of twelve. Rainbow Dash, meanwhile, was watching with renewed interest. So he wasn’t a shower, and it looked like he had a pretty big dick, but that didn’t really mean that much. So he had a big dick. Big Mac had had bigger.

And then Shining’s cock surged past sixteen inches, and Dash got real interested.

Seventeen. Eighteen. Twenty - his balls slapping against his thighs as Shining really started to get into it, grunting and squeezing his cock between his hooves. Instead of drops, a steady line of precum was now beginning to drool from his tip. Twenty-two. Twenty-three. Two feet.

Neither mare noticed it, but Rainbow Dash was beginning to salivate. Rarity shifted uncomfortably in her seat, unable to deny the moistness that was beginning to grow between her own legs. Her hoof began to creep down toward her crotch - surely just one touch would be acceptable, at least in the sight of that gigantic pillar of stallionhood.

But Shining Armor wasn’t done quite yet. With a few more grunts and a groan thrown in for good measure, he worked his shaft with well-practiced hooves until it was level with his forehead. There, the growth slowly tapered off until it stopped, with his tip just about level with the point of his horn. He groaned softly and let his hooves fall away. Bobbing before him, above a pair of balls that looked to be swelling even larger with cum by the second, his shaft must have been as long as a hoofball bat, and as wide around as a cantaloupe. Meanwhile, his balls had reached the size of small melons themselves, swaying gently between his quivering legs.

Shining came to his senses, panting as a small amount of sweat dripped down his forehead. “There,” he said, a small, but proud smile on his muzzle. “There you go.”

Wordlessly, Rarity levitated a measuring tape from her hoofbag. Both hers and Dash’s eyes nearly popped out of their skulls when they saw the final number: Thirty-one inches.

“I - “ Rarity licked her lips. In fact, her entire jaw was quivering, though whether from shock or a drive to smack her muzzle right onto that enormous, fat, throbbing -

She tried to shake herself out of it, failed, and swallowed hard. It filled her vision: that titanic, meaty, gently swaying testament to Shining Armor’s stallionhood.

“And did you know,” Cadance said lightly, “that I can take it all?”

Rarity was surprised that she didn’t pass out.