"He's cumming. He's cumming!" Betsy wailed as the hot jizz squirting from Tiny's cock flooded her asshole and catapulted her into another more intense orgasm. "We're creaming, Patti. Ohhhh, God!"
Tiny fucked away at Betsy's quivering body, squirting wad after wad of hot thick cum into her asshole. He whinnied, tossing his head high, snorting sounds coming from his flared nostrils. His front hoofs pounded the dirt as his cock pounded Betsy's asshole.
Betsy was impaled on Tiny's cock. She thrashed on the ground, her ass high, her tits dragging in the dirt. She felt each stringy lump of cum as it shot from Tiny's pisser and whitewashed her asshole. Jizz shooting into her asshole was strangely like the enemas she had received as a baby. "Ooooo, I'm going to faint!"
Tiny fucked forward, taking Betsy's writhing twisting body with him. Gobs of gooey cum greased his path as he fucked Betsy's ass. He fucked with more force, his balls thudding against her cum-stained thighs.
Betsy was shaking uncontrollably. Her ass humped. She lifted her head, then let it thud back against the ground. She shoved back, matching the pony thrust for lunge.
"He's still cumming, Patti! Ohhhh, I am too!"
With Betsy's asshole greased, Tiny had no trouble ramming his exploding prick deeper and deeper. His cum, shooting out like a geyser, now gushed from Betsy's asshole with each violent stab. Jizz dribbled down his swinging balls and the backs of her thighs.
"Aghhhhh!" Betsy dragged herself up, then collapsed. The last stabbing thrust of Tiny's cock knocked her to the ground. He fucked hard, spurting jizz. He neighed, then stepped back, his cock popping from her asshole. He sprayed her back with a fine mist of white sticky cum.
With his balls emptied for the second time, Tiny lazily walked back to his stall. The two teenagers had drained him completely.
Betsy pulled herself up. Dazed, she looked at Patti. "I hope your mother didn't hear us."
Patti laughed. "She's busy getting ready for the show." She stood, found her clothes. "We should get ready too."
"I know," Betsy sighed. They dressed. "Next time, I'll take him in the ass," Patti said.
"I'll take him in my pussy," Betsy added.
"Great," Patti said. They left the barn.
Alice was coming out of the house. "You two girls ready to leave?"
"Yeah, Mom," Patti said as she grabbed Betsy's hand. Together they ran for the truck Alice went into the barn to get Blazer.
Fifteen minutes later, Blazer in his trailer behind the truck, Alice headed toward the horse show, with Patti and Betsy laughing all the way.