"Hey mom, what's going on across the street?"
Michael and his sister watched out their window as several zoo trailers pulled up across the street from their home. The two siblings watched as zoo workers began loading animals into the trailers. Stella, Michael's mother, walked into the room and squinted at the animals being stowed away.
"I don't know Michael. Where did all of those animals come from? Did they escape from the zoo?" Stella continued watching as more animals appeared. She gasped when see saw what looked to be a gorilla being pulled from behind one of the houses.
"Wow! What's a gorilla doing here? They really need to keep a closer eye on their animals that zoo."
Stella then noticed that the gorilla was wearing remnants of some jeans around its waist. In fact, the jeans looked eerily similar to those she'd seen Eliza, her friend across the street, wearing that morning. Even odder, the gorilla itself resembled Eliza.
"Michael, watch your sister. I'm going to ask what's going on here.", Stella exclaimed as she walked across the street and up to the female zookeeper giving instructions to the workers loading the trailers.
"Hey, what's with the animals? And what's with those jeans on the gorilla? They look like the ones my friend had on this morning."
The zookeeper turned sharply, eyeing Stella. "Shoot, almost a clean getaway", she muttered. "Oh well, always room for one more." She gestured for two attendants to pull Stella into the trailer with the gorilla.
The mother yelped as she was brought right up to the gorilla and the zookeeper. She watched as the zookeeper put on gloves and reached into the jeans hanging from the gorilla.
Stella watched in disgust as the woman began fondling the male gorilla, soon pulling a throbbing erection through the shredded crotch of the jeans. "You see", the woman sighed "this beast is your friend." The zookeeper continued as the former mother, turned male gorilla, began breathing heavily, "and now that you've interfered in our little operation, we're going to have to take you along with us."
Stella looked into the gorilla's eyes and could see some traces of her former friend. Her look of disgust turned to horror as she realized she was to become a beast as well. "No, let me go! Eliza, please fight this. I know you can do it! Eep!"
A low groan could be heard from Eliza as her cock began spasming and she emptied her balls all over her friend. Some clarity returned to the gorilla's eyes as Eliza realized what she had done. Stella, meanwhile, pushed away from the zoo workers and back into the sunlight.
Back inside, Michael and his sister watched as their mother emerged from the trailer. She was covered in some form of substance, frantically trying to brush it from her hair and clothing.
"What are you all looking at? I'm going to the police!", Stella exclaimed as she continued brushing the sticky cum off herself.
"I highly doubt that" the zookeeper stated. "That bulge won't take care of itself."
"Bulge?" Stella started as she stared down in confusion at her pants. Sure enough a nub had formed in her tight yoga pants. The look of confusion turned to horror as the nub began slowly growing. Stella turned towards her house, aiming to escape the zoo staff and her oncoming changes. This gave her children a clear view of what was becoming of their mother.
The siblings watching from the window gasped as they saw the growing tent shape in their mother's pants. The tent increased in size until it was eventually at full mast in the tight workout fabric. Stella, meanwhile, had stopped retreating from the zoo vehicles and was instead staring at the pulsating meat in her pants.
Incredible sensations began to flow from the new appendage, making Stella blush and let out a slight moan. Two balls fell below the appendage, fully filling out Stella's tight pants. She tried to fight the sensations, but they proved too powerful for her. Stella's son and daughter gasped as their mother's eyes rolled back and she sank to her knees.
A groaning sound escaped the mother's mouth, as the changes pushed her over the edge. With a shudder, Stella's new penis erupted spunk into the surrounding yard. Clarity returned to her for a moment as she looked in shock at her male seed staining her garden. This clarity was short-lived, however, as the tight yoga fabric quickly urged Stella's member to another erection. Before she could get up from her knees, a second orgasm hit her, and then a third and forth. Before long, a shallow pool had formed from the cum expelled from Stella's new equipment.
Straining, Stella was able to regain some control over herself and began to rise to her feet. Her penis had become limp, dripping spunk down the inside of her yoga pants. She began to stagger back towards her house when her attention was caught by a female ape-like creature being held by zoo workers in a trailer. Inside, Stella knew that this creature was Edwin, Eliza's son, but her new hormones didn't care.
Stella's penis surged up, becoming fully erect as she frantically turned and staggered towards Edwin and the open trailer. As she got closer, her new penis won its battle with the confining yoga pants and burst into the open air.
Michael and his sister watched, horrified, as their mother flung herself at the creature across the street. She grinded insistently at the creature causing spurts of her cum to spray all over the beast's large breasts. Stella then positioned herself under the creature and thrust up eagerly into the creatures vagina. A look of pure lust spread across Stella's face as she humped madly at her neighbour. With a loud scream, Stella came hard into Edwin's vagina.
The siblings watched as clarity returned to Stella and she pulled her cock from Edwin. Her new penis was now limp and dripped cum as it retreated into her yoga pants. Stella, now exhausted, looked to retreat back towards the safety of her house and children again before she was pushed into the open trailer alongside Edwin.
"Oh no." she heard the zookeeper say. "You're coming with us." The zookeepers laughs could be heard as the vehicles started up and pulled away.