“Hey! What are you boys looking at?” Carlos complained, adjusting his tiny bikini to better cover the areolas on his fat, squishy tits. Walking up to the pool he took at seat at the water’s edge, kicking his feet in the water as he felt his heavy stomach rest on his thick thighs. Whipping his hair from his face he took in the summer heat, watching the teens splash around and have fun while he watched as the ‘responsible adult’. In fact, Carlos wasn’t an adult at all - instead, he was a classmate of the gang of teenage boys, and had bragged earlier that week about how his rich single aunt had an enormous swimming pool in her backyard.

He figured he could become ‘cool’ by inviting everybody over to swim, but had to figure out a way to convince his aunt to let them in. A woman who had made most of her fortune selling potions to other witches, she promised to give him and his friends unlimited access as long as he helped her with a little ‘experiment’. She had a potion that could be used to swap people’s bodies, and wanted to test it out for a day. Carlos’ aunt was in her 30’s, and had gained a lot of weight over the last few years, but he was desperate to impress his friends. Besides, nobody would find out, right?

Carlos had spent the last few hours in her body, and everything was so strange and awkward. While his aunt had fun playing in the water in his young body he was forced to squeeze into an old too-small blue bikini and black panties, his giant swinging tits and bloated belly a constant reminder of his current fate. Plus, even at this size he knew that some of his classmates were staring at his body. Disgusted, and even uncomfortably aroused by their lustful gaze, he retired inside until the sun had set and everybody had left. As his aunt came inside drying her form off he finally went out to take a dip by himself, enjoying the cool water as his boobs floated casually on the surface. Eventually heading back inside, he saw that his aunt was readying the reversal formula for them to change back.

Both drinking the potion, they waited for the changes to take place, but nothing happened. Carlos shifted in his seat, nervous at the prospect of spending any more time in this fat body of hers. “I swear my calculations were correct... unless... you went into the pool, didn’t you?” Carlos nodded. “Well, the transformation magic doesn’t work if that body is pregnant. And I, uh, got a little excited about being a healthy young man and the jets felt really good and, well...”

“I’m PREGNANT!” Carlos screamed in anger, groping his flabby stomach, “I don’t want to have kids! You disgusting pervert! I’m going to carry the baby of my own nephew!”

“You’ll be fine...” his aunt said, grabbing a handful of her former tits. Clearly she didn’t mind her consequences of the situation. “Once you give birth we can finally change us back. Maybe you’ll like motherhood...” Looking down at his stomach, imagining how much bigger it would be in 9 months, he wasn’t so sure.