"Jen... I..." Sam tried to form a sentence. She shuddered from the orgasm, and spread her legs. Her donkey cunt stretched, but remained tight around Jen's cock.
"Sam...?" Jen said, her own arousal starting to return.
"I..."
"Transform or dare?!" Jen blurted out. Sam was too stunned to say anything. Jen's penis started to fill again, inside Sam's snatch. She moaned as her lips held tight to Jen's cock, and as the head rubbed against her insides.
"Now you get both! For your transformation, you'll grow a huge, hairy donkey dick and a low hanging, hairy nutsack like mine, but keep your jenny cunt! And for your dare, I dare you to use the curse on me to give me a huge, hairy donkey pussy!" Jen screamed as her orgasm built up. She pulled out of Sam's snatch, just before she came. Cum was sent all over both girls, and soon the two donkeys were lying in a mess of spunk and sweat. It didn't take long for Jen's cock to rise for a third time.
"Transform or dare?" Sam asked mechanically. She wasn't even aware of the words she was saying. The growing pressure in her crotch was all her mind could think about.
"Transform!" Jen said eagerly.
"You will keep your cock and balls, but grow a large jenny pussy." Sam said. Then she threw her head back and brayed like an animal. Her body shook as a nub started to poke out of her body. Her vagina moved backwards, until it was positioned right under her donut of an asshole. It pulled down into a teardrop shape. A true jenny pussy.
But below that, two lumps had swelled out. They pushed out, and soon Sam had two balls the size of grapefruits hanging from her crotch. Hair curled up and around her ass and pussy. Her new penis sprang forth, shaking as pre dripped from the tip. The sheath traveled up the shaft, and her penis' head flattened. It puckered as a medial ring formed. The pink skin soon became spotted with leathery black skin.
Beside her, Jen was shaking as her own body transformed. A slit had formed beneath her sack, and was pulling back until the edge touched her donkey asshole. Then it puffed outward, hot and smelly. Jen too brayed as her pussy lips returned, black and thick. Wiry pubic hairs like Sam's coated the outer lips, while the inner lips dripped with juices.
Jen stuck her hand into her new jenny pussy, which had stretched into a long oval like Sam's. She tugged at her balls, and placed them over her new snatch. Her lips strained as she stuffed her low hanging nuts into them. Her tail lashed in the air, and every now and then, brushed against her engorged lips.
Then, Sam approached her friend, smelling the air and Jen's new cunt. The two brayed in lust, their blackened lips dripping woman fluid to the ground, and their black nipples rubbing against their growing cocks. Finally Jen couldn't take it anymore, and she grabbed Sam and pulled her close. Sam drove her new penis into Jen's snatch, both loving every second this their sick animalistic fucking. Sam pulled back and forth, ramming herself into Jen's hole faster and harder.
Their balls slapped against each others, and Jen's tail tickled Sam's cock as it swayed. Jen's hand went down to tug at her own penis, and then her teats. Sam was lost in a cycle of passion. Jen's donkey hole was so tight and warm, and her own cock was so hard and hot. She couldn't stop herself. Her whole existence was this fucking. She kept going, until finally she reached her first male orgasm. Chunks of cum split out, and even more was lost inside Jen's pussy. Jen brayed as a load traveled up her own shaft, and her cum joined the puddle beneath her.
The two girls took heavy breaths as they collected themselves. They lay on the floor, both with huge donkey cocks, hairy, and heavy ballsacks, and equally large and hairy jenny cunts. Jen's tail flicked, and her ears were still erect atop her head. Sam nuzzled up against her friend, savoring the smell of her musky folds, and cum.