She finds a prison for you

“Well Willy, I guess naughty boys like yourself have to go to prison. And I know just the place…”, Alice responds to your silence.

You shudder at the thought of what your dear little sister has in store for you. What kind of prison could she even put you in? Her doll house? You look nervously at her doll house and she notices.

“Oh Willy, you are supposed to be my smart big brother! The doll house is boring, I have a much better idea in mind.” She then lifts you to her throbbing penis and rubs you against the glans that she has been slapping you with. “Since you are so small….have you ever considered my body as a prison”, she giggles as she rubs you harder against her throbbing purple cock head.

You are absolutely shocked. There is no way your little sister could actually be considering something as crazy as this. You frantically shout in the hopes of getting her to stop.

“Too late now Willy, this is going to feel to good!” She lets out an excited giggled and her cock jumps a little.

You are slid upwards and pushed slightly into her urethra. The smell is intoxicating. The precum leaking up begins to lube you up as she begins to push you in. Your head and shoulders slide in, which causes her to let out a little moan. Alice’s eyes roll back into her head as she bucks her hips a little with you stuck in her cock slit. You frantically flail your legs, but to no avail; you are completely at her mercy. Between her cock slowly pulling you in and her finger on your lower section, your body slides all the way in.

The inside of her cock is hot with all of her excitement. She begins to stroke her cock, emphasizing on the downwards motion, which further you along to the base of her cock. It is here that you feel her whole body shudder, and a thick jet of cum meets you in the tunnel you are trapped in. Alice screams in pleasure as she feels her cum trapped at the base of her cock. She takes her thumb and pushes on the bulge you are making on the base of her sick and pushes downward. This luckily prevents you from being shot out and allows you to push back her current of girl cum. After going down some more you fall into an ocean of cum, which quickly pins you to the tight hole you entered from because of the suction. Once Alice is done splattering her bed sheets with her cum, you now understand what she meant. You were now in the empty testicle of your little sister, with no means of exit on your own.

“Thanks Willy, you really are the best big brother ever, but I hope you understand that this is a just punishment for you! My balls are the perfect place to keep you safe and detained for your actions! Almost as if it’s…horny jail!” She laughs in delight as she puts back on her tight panties, squeezing your room up against her body.

After a while, you look around hopelessly at the lightly pulsating walls of your little sister’s testicle. You aren’t sure how long your ‘sentence’ is, but your situation does seem to be hopeless. You’ll have to wait on Alice to do something. Or you could take the initiative yourself, no matter how useless it seems…