Sibling Duties

Your sister was heading off to the beach for a party with her friends but your mum insisted she took you with her. Your sister was furious but decided not being allowed to go was far worse than having you come along for a few hours. You complained and whined in the back seat of the car the whole ride over until your sister had enough.

"That's it you little shit! Mum didn't say you had to stay as you were to come, only that I had to keep an eye on you and that means I can do this!" She pointed her finger at you and you began to feel strange.

Your skin began to turn blue and your skin felt more stretchy than you were used to. Next you got thinner and thinner as your body began to collapse on itself. Soon you were nothing more than a blue swimsuit lying in the backseat.

"That's more like it", your sister said turning and giggling as she pulled into the car park. She climbed into the back and got changed, pulling your new form over her body. You could feel and smell everything, from the curves of her tits to the sweat of her ass. "Let's go have some fun bro, and don't bother crying for help. No one can hear you, not even me!"

She got out the car and ran down to her friends at the beach, smiling, knowing full well that if she went into the ocean you would never turn back.

((Hope you guys are enjoying my content, comment below if you think she will keep her brother dry or whether she will make his predicament a little more permanent...))