And looks like she’s nothing but a quivering mess.

@Background Pony #257C
If MLP stallions ejaculate like real horses do, then they would have no refractory period, but they would dump their entire load all at once, so they would need a couple of days to refill.

Human men, on the other hand, only release a small portion (1.25-5ml), then we have a refractory period, after which we can go again if we want, letting us come up to a maximum of fourteen times per day.

@Background Pony #075E
I like to think that, while humans are obviously less endowed than normal horses, we are bigger than the average MLP stallion. And we not only have better stamina, but also much shorter refractory periods. Not to mention some very dexterous fingers!

So, while we may not be able to literally rearrange their insides with our dicks, we can get them addicted to us enough to cause population concerns due to them not wanting stallions anymore.

@ZhaoZoharEX
Yeah, though that size is exceedingly rare IRL, and comes with some medical complications. The average human penis is 5-6 inches, because that’s already as big as you would need if you’re only mating with human women.

@Background Pony #075E
Jesus, 12-13 inches? I think is be more intimidated than aroused if that thing was coming near me, no pun intended.

Human cocks can be up to 12 or 13 inches in length, which, while not that big by equine standards, should still be plenty big enough for these little ponies. A man with this endowment, combined with the naturally greater stamina that humans have over nearly any other species, would be more than enough to make any mare a mancock addict.

@Stitch  
Holy God almighty fuck, indeed

Smug to sub in ten seconds flat. Good shit, Alcor.

hot

easily one of the best of instant loss

Fucked the arrogance right out of her. What a chad.

holy god almighty fuck

I get the feeling Trixie doesn’t really care who is on top or bottom. So long as she winds up so thoroughly rutted that she can’t feel her legs, it’s a win in her book.

I’m not surprised that she’s a sub.
 
She act high and mighty in public, but the moment your in bed with trixie.
 
She’s switched to a submissive girl that wants some god DICKING! and be spoiled endlessly.

The next day…
 
Starlight: “Hey, you! You damn near crippled my marefriend from how hard you rutted her!”
 
(she begins charging up her magic)
 
“You… are going to pay for that.”
 
(15 seconds later…)
 
“Hngh! Ah! Unh! Fuck! How?! How did (ah!) an overgrown ape like you overpower me (hnnn!) so quickly?! WHY IS YOUR DICK SO FUCKING HUGE?!”
 
(18 minutes later…)
 
“H… how are you still going?! No stallion could last even a fraction as long as this… I didn’t know it was possible to orgasm so many times in such a short time span… okay, you win! I’m sorry, Trixie, I failed to avenge you…”
 
(the next morning…)
 
(Starlight wakes up, simultaneously exhausted and refreshed, still impaled on his dick. After managing to pull herself off him and magically sealing the tidal wave of cum in her to prevent a mess, she hobbles over to the desk and begins writing a letter.)
 
Trixie,
 
The human got me, too. I can barely feel my hind legs. We need to team up and stop him. If he keeps breaking in mares like he did to us, he could conquer Canterlot in under a month.

 
Yeah… hubris DEEZ NUTS in yo mouth!!