A/N: Hello again! Thank you so much to those who reviewed. I'm very grateful for your encouraging words, it's nerve wracking writing something like this! For those who are also following The Potter Family series, I will get to that soon. In the meantime, enjoy this chapter.

Warnings: Do not read on if you are underage, if you dislike chan and/or incest, or if you like them, but cannot differentiate between what is fan fiction and what is real life. My stories are strictly for entertainment only and not to be copied or followed or taken as the truth in any which way. Got all that? Please proceed ONLY if you agree with the above.

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Flashback to the previous night...

Bill was pleasantly surprised when Molly followed him upstairs and tucked him up in bed. She nodded when he pointed at Percy – lying flat on his back and snoring away - and assured him he would have his own room as soon as they could afford it.

After she kissed him goodnight and tiptoed out, Bill sighed and closed his eyes. He was sure he wouldn't sleep a wink what with all the information buzzing inside his head, but the next thing he knew, it was morning and sunshine was streaming in through the little window. He followed his brothers downstairs, admonishing Fred and George who were racing on ahead as usual.

In the kitchen, his father had the Daily Prophet open before him while his mother burped baby Ron over her shoulder. Nothing seemed different except for the anxious, tight smiles they gave him. He smiled back at them and shrugged, feeling a bit funny when their smiles turned to ones of relief.

As soon as Arthur left for work, Molly told Bill to clear away the breakfast dishes and Charlie to take Percy and the twins outside to play in the front garden. She then levitated a chair to the front door and sat there with Ron sleeping in her arms, keeping an eye over her brood.

Bill hummed softly to himself as he washed the dishes by hand. He appreciated his mother giving him some quiet time to think things over since he wanted to understand what he had been told last night and what would happen tonight. He didn't mind contributing a part of himself; it was just strange to realise that if his mother did get pregnant again, that baby would be his biological child and not sibling.

Putting away the last plate, Bill went back upstairs and took down the book she had left on top of the rickety clothes cupboard last night. He kicked off his shoes, sat on his bed and started reading the two chapters she had bookmarked for him.

One was about puberty, the other about reproduction.

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Back to the present time where the previous chapter ended...

Bill came to the conclusion that sex was a very awkward business. His parents were always open and loving with one another, but seeing them on the bed now suggested the complete opposite was true. This was also his first time seeing his mother naked. He had seen her breasts before when she breastfed his younger brothers, but to him, they were just two mounds of flesh sitting on her chest that produced milk. His father seemed to enjoy touching them though.

Bill had read that this was an essential part of foreplay, but his face contorted into a grimace all the same. He watched as his father spelled a lubricant onto his fingers before stimulating his mother and was relieved when it seemed to be working since they were both smiling again.

When it was his turn to act, Bill didn't hesitate to down the aging potion. Despite his father's warning, he was unprepared for the sudden change that occurred as soon as the sour tasting liquid hit his stomach – his body shot up a few inches, his throat tingled and then his underarms and groin started itching.

Gulping, he squeezed his eyes shut and waited until the reactions stopped before opening his eyes. His parents were sitting on the bed and smiling up at him.

"Oh, Bill," Molly said, blinking rapidly, "you will be such a handsome boy when you grow up... not that you aren't one already!"

Bill just shrugged and held out the empty vial which Arthur took back with a still trembling hand.

"What now, dad?" he asked before realising his parents were staring at his groin.

"You need to take off your pyjamas, love," Molly said.

That made Bill wrinkle his nose. He knew one couldn't have proper sex with their clothes on, but he felt shy about stripping in front of his parents. He had started bathing himself since he was four, seeing how busy his mother was with his brothers. Slowly, he took off his pyjamas and gaped when he saw the ginger curls at the base of his genitals which seemed a bit longer than before. He had read about body hair being a part of puberty, but seeing it on himself was something else.

"Alright. Now what?"

"Well, first, you need to... you know..." Arthur broke off and made a vague motion with his right hand, fingers curled into a loose fist. He scowled when Molly giggled before turning to Bill.

"Come here, love," she said.

When Bill stepped closer, she took his right hand and wrapped it around his limp member. "Now grip it firmly and move your fist up and down over it."

"I have to... masturbate?" he asked uncertainly, recalling what the book said teenage boys did on a regular basis once they hit puberty.

Arthur made a strangled sound, but Molly nodded, two bright pink spots on her cheeks.

"Yes. Well, not completely, but just enough so that you get - I mean, so that it gets - well, why don't you give it a go?" The last few words were said very fast.

Bill did as she suggested. Ooh, that felt... he did it again, instinctively tightening his grip.

"Like this?"

Molly nodded and smiled at him, her face growing pinker. "Yes, just like that. It will get bigger and harder."

Bill nodded, his breath coming a bit quicker past his lips. He wasn't quite sure what to make of the sensation, but his flesh was growing longer and feeling... fuller.

"That's good, love. You should stop now."

Bill reluctantly did so.

"It aches a bit," he said, looking at his father who hadn't said a word til now. "It... throbs."

"Oh yes, it does," his father agreed at once and his mother cleared her throat.

"Now, Molly," Arthur said, turning to her, "I just meant that it feels good, but not as good as when you -"

"Arthur!"

"Oh, sorry!"

Seeing his embarrassed father and his mortified mother staring at each other, Bill sighed. His right hand was twitching a bit and he wanted to go on touching himself. It was his turn to clear his throat. Loudly.

"What now, please?"

To be continued...

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