“Ahhh...” Peter sighed in relief, feeling the hot water run through his hair as he pressed his huge, saggy tits against the shower glass. His whole body ached from working around the house all day, and his nipples were sore and sensitive from the constant breastfeeding his baby brother demanded. When his mother had asked to swap their bodies for the day so she could finally find some time to relax he was more than happy to help, but now he realized how much work it was to live her life. While taking care of a baby and the house, all while having to breastfeed, his breasts were constantly swinging since he couldn’t work out how to put on a bra. This was the first time all day he’d finally been able to relax, even if it meant having to look at his mom's naked body.

Peter was so distracted by the calming water that he didn’t even realize that his dad had returned from work and opened the door to the bathroom. Catching his wife with her big milky boobs in full display, and unaware that it wasn’t her inside of the body, he whistled in amusement. “Honey, those are incredible as usual! Mind if I have a feel?”

“D-Dad!” Peter exclaimed in surprise, trying to cover his nudity. The whole thing had been a complete secret, and he didn't want to break their promise. “I mean, honey! You’re home!”

“No need to hide those from ‘Daddy’!” he laughed, reaching a hand through the door and playfully grabbing a handful of boob before Peter could react. “It’s nothing I haven’t seen before. I’ll be in the bedroom in 5 minutes for a little you-know-what if you'd like...”

Peter was mortified by his dad’s advances, and feeling his worn pussy between his legs he was reminded that this vagina must have been pounded by his dad’s dick hundreds of times (not to mention the fact that it had once given birth to him). Stepping out and wearing a towel to cover his privates, he immediately began searching for his mom who was in his old body, desperate to return to his old life before his own father made any more sexual approaches. Finding his mother in his old room, he looked at her and crossed his arms underneath his bust. "Mom, you won't believe this! Dad just tried to have sex with me!" he almost had to pause to stop himself from gagging.

His mom looked up at him, brow furrowed in concern. "Oh honey, I have more important news to share. I was researching the magic spell we used to swap our bodies and... well, I can't find a way to change us back. I'm going to keep researching, but it looks like we might be stuck like this."

Peter was so shocked he dropped his towel, exposing his naked front to his 'son'. "You can't be serious! I can't be a mother! These boobs are so heavy and I don't want to have to breastfeed my own little brother! What happens when dad wants to... sleep with me?"

While Peter seemed disgusted by the idea of the change being permanent, his mom seemed optimistic. "It's not that bad. You get to feel proud of supporting the family! Besides, I think you'll like sleeping with your father. Trust me, that body of yours gets urges."

"Mom!" Peter protested, unable to believe what his Mom was saying. Although he had to admit that thinking of his dad that way was making him hot between the legs... but he was sure he would never, ever want to have sex with his father.

He lasted a week before giving in, and the pair haven't missed a night since.