color edit of Public Mistake’s paper drawing (ponybooru id) >>1341797  

 
Starlight Glimmer was a mare, and sometimes she had her mare needs. She hadn’t fucked for weeks. She was desperately in need of someone to fuck.
 
As she walked down the street, she noticed a stallion with a delicious-looking cock between his legs. Her mare pussy began to leak mare lube as she stared at the smooth strong cock of the stallion. She felt her mare pussy to wink with anticipation, presenting her clitoris to street walkers.
 
The stallion caught her needy looking at him, and smiled. He slowly walked over to her and presented his erected cock. She gratefully accepted and laid down on the back, spreading her hind legs and presenting her swollen wet winking pussy to the stallion.
 
She yelled aloud the street when she feel her pussy being expanded by thick meaty stallion rod. Stallion was pent up from sexual needs too, and ten seconds later came immediately into pussy, filling her with loads of cum. Starlight’s eyes shot wide open as the mare’s pussy is filled to the brim with cum and then some as her body was filled with the stallion’s seed. The stallion was so pent up that that he didn’t lose erection after first shot. And continued to fuck Starlight even faster into cum filled pussy, now with flared cock head. The mare felt the stallion’s flared cock head moving deep inside her pussy and was shocked to feel it stretching her uterus entry. She was about to pass away from overstretched vaginal channel but the stallion’s cock exploded a second time inside her as another load of cum was released into her womb. The mare screamed in pleasure and the stallion finally pulled his dick out of her pussy and left her to deal with the mess leaking from her gaping mare hole. Starlight finally got up after her body stopped spasming…
 
Starlight was ecstatic. She thanked the stallion for the delicious cock, and thanked him even more for the kindness he had shown her. As she walked away, she felt full and content - and happy to know that there were still ponies in the world who were willing to help a very horny mare. Gathered street crowd was all blushed after the the public sex burst, and then dispersed.