Despite the effort Jess kept staring at this sweaty chunk of meat swinging hypnotically underneath her mom's miniskirt.
"I wanted to share my box of sex toys. I can smell you're also in heat and I didn't want to have all this fun alone..."
Her mom's tail swished excited as she turned towards a cabinet and pulled out a big pink plush box with various hefty rubbery dicks flopping about.
"So what it's going to be? I got crops, saddles, and an orgy of horse dicks.. or..."
She dug deep into the box and pulled out a leather harness fit for a horse girls like Jess, smiling with a devilish grin.
"Say ahhhh!"
"Mom, I don't know what..." Jess started before her mouth was filled with a heavily bitten cylinder holding her mouth open and tasting of wood and cum.
"Shhh, darling. Pets don't talk."
With a lighting speed her mom fastens hoof-like gloves on Jess' hands making it impossible to remove the harness on her own.
Jess can't help but lick the foul object, the foul taste only further enticing her.
"Do you like it? It's my old harness from back when I got Lisa pregnant. We spent nights and days rutting like the world was going to end and eventually we got you."
She grabbed a small bottle with pink glowing liquid and chugged the contents. "That always hits the spot!" her phallus instantly erects while balls swell to ripe grapefruit size pulling the wrinkly sack down like bowling balls.
Jess remembered something. In this world human mares are common and sex and incest so rampant that stores sell medicine to stop mares from getting pregnant so they could enjoy the coitus without worrying about pregnancy. She just reached the age of 22 and her estrus got so out of whack her mom has to fuck her senseless or she'll jump on the first dick she sees.
Jess looked at the massive shlong. Moisture built inside her massive lips and burning need became only bigger as she tried to run away from the desire. To pounce on the hard shaft and screw her brains out. To feel all that horse cum explode against her womb. To greedily swallow every drop with her cervix. To repeat until the heat ends or they both collapse.
Her mom pulled out a crop and slapped her own ass testing the strength. Satisfied with the pleasant sting she turned towards the quivering horse girl. "What's the matter sunshine? If you don't want it just give me our usual safe sign. Three quick floor taps with your hoof."
Jess sweating and shaking wondered how it would feel to give in just for a second. It was wrong in the old world but her repulsion for the act was pushed aside by the powerful animal instinct to rut.