Shining Armor squirmed in his seat.

The train was moving somewhere around twenty miles an hour, having just picked up speed after leaving the station. Outside the window, Shining could have seen the Canterlot countryside flying by, complete with sunny skies, golden fields, and snow-topped mountains in the distance.

Each bump of the train on the tracks, though, brought to mind another thing entirely. Shining winced again as he felt his seat jostle against a particularly sensitive part of his rump. It wasn’t a wince in pain - entirely the opposite, in fact.

On his lap, a prominent bulge was clearly visible rising through his pantleg. Big Macintosh may have been the biggest stallion Ponyville had ever seen, but if anyone had looked at Shining’s lap right then, they would have second-guessed even the big Apple’s superiority.

It was a long, thick bulge running from his crotch almost all the way to his knees. An unobservant pony would have thought at first glance that Shining just had a particularly thick left thigh, but here on the train, with the constant vibration setting his arousal alight, there was no mistaking the long, hard shaft pushing up against the fabric, and down against Shining’s leg.

Shining let out a short gasp as the train went over a bump in the rails, his crotch involuntarily flexing and then releasing. It was a moment before he realized his package had started to drool; it was only the wet spot underneath his hoof that tipped him off at all.

“Dammit, dammit, dammit,” he muttered, then blushed as he noticed a motherly-looking mare glaring at him from across the aisle. “Sorry, sorry.”

He reached down to his crotch to try and get an idea of the damage control - and then gasped as he felt his hoof brush against his balls. They were incredibly sensitive to the touch, and swollen to boot; he could feel them easily through the fabric, could almost feel his seed sloshing about inside.

Meanwhile, his cock continued drooling. Shining’s smile quickly became forced as he felt globs of pre soaking through his good officer’s pants, his stallionhood throbbing every few moments for good measure. He tried to prod one of his balls again and nearly moaned in pleasure, a new spurt of precum gushing out and drooling down the side of his leg as he struggled to keep himself - and his legs - together. By now, there was a fairly noticeable puddle on the floor beside his shoes. He shivered as he moved his foot to cover it with a loud squelch.

“Hey there,” he heard a voice say from behind his shoulder. Another stallion. “Looks like every other seat’s taken. Mind if I take this one?”

Shining nodded slowly, hardly trusting himself to speak.

Shit.