Her sister at the front door

Emma's focus was suddenly interrupted by a loud bang as the front door was opened and slammed shut. Her hand still wrapped around her new cock, her lust was temporarily forgotten as the fear of being caught took its place. Loud footsteps clattered up the stairs and she huddled down further into the covers, trying to make sure nothing unusual would be visible.

Her sister Hannah opened the door and stuck her head in, with a big smile on her face.

"still in bed?" she asked pointlessly as she came in and unceremoniously dropped onto the edge of the bed.

" guess what? I've got the day off work! There's been some kind of problem and they sent us all home."

Emma tried to focus on Hannah's words, but all she could think of was the semi-hard cock still in her hand. Thankfully, Hannah was managing the conversation for both of them.

"I'm going to get changed, then we should do something? Have a think what?"

And with that Hannah turned and left, pulling the door closed as she did.

Emma let out a long sigh of relief and slumped back into the bed. Now she would have to do something with Hannah today. Again, without thinking, Emma found her hand caressing her cock as she tried to distract herself from her lost day. She felt the lust coming back, as her cock began to harden against her palm.

Quickly, Emma fell back into the lustful spell of her passion. Her breathing deepened and she closed her eyes as the throbbing cock held her complete attention. She soon felt her excitement building, unstoppably demanding completion. And then she remembered Hannah. She remembered Hannah's petite body closed to her's. She remembered her short red hair, sexy freckles and smiling face. She remembered the firm swell of Hannah's small breasts. Then she imagined her cum exploding all over Hannah's smiling face. She imagined Hannah's lips stetched around her cock. Wrapping her hand's in her sister's hair while she exploded down her throat.

And with a barely surpressed moan, Emma's new cock exploded, covering her hand and bed in sticky cum. She rolled away from the mess, and went to clean up. She was shocked at her thoughts. It was one thing to think about girl's in that way, maybe, but her sister! As she replayed it in her mind, she found her revulsion joined, to her horror, by lust. Her cock began to call to her again.