With a little encouragement

“Hmm I don’t know if I should. You did make me swallow what felt like a gallon of the stuff already” Mom hesitated before trying to make a joke, feeling the pressure now that you had brought attention to it.

“Oh come on, it can’t taste that bad. Do you really not want to know what I taste like?” you asked, urging her to reconsider.

She looked between you and the cum coating her fingers before she realised you weren’t going to let her go without at least licking what remained of your climax off of her fingers.

“Go on, I promise you won't regret it” you urged, giving her some extra encouragement when you could see she was getting herself ready.

She was right in that she had swallowed your load before and on previous occasions before tonight but you still got chills when you watched her slowly bring her fingers to her lips as her tongue took a cautious lick before she tasted some of your cum. One lick turned into two and then as she knew she had your attention, she cleaned off the rest of her fingers as if mimicking a blowjob, her lips sliding up and down her digits until there was no more of your cum left.

Her fingers now shined with her saliva and she took one final gulp before showing you her empty mouth.

“You should see the look on your face. You look so surprised that I actually did that” Mom smiled, happy to see that she had managed to leave you stunned.

“So, I take it that that means you liked the taste?” you asked, knowing the odds were in your favour.

“It’s… better than I expected. A lot better actually” Mom replied, sounding surprised at her own admission.

“Well good cause you're gonna be swallowing a lot of it from now on. It would have been a shame if you didn't like the taste” you teased, getting up from where you were lay and moving to sit next to her.

The blush on Mom’s face now made her shine like a tomato but with a quick kiss on the forehead, you got up to leave the room, only turning to her as you got to the door.

“Thanks for keeping me company” you added, leaving the room before she could reply.

You would have liked to keep teasing her and not leave so abruptly but with the chance that Sarah was still stuck close by after spying on you and Mom, you wanted to give her a chance to escape with you.

It seemed that your intuition paid off though as you looked down and to the left of the door to see Sarah sat there leaning against the wall, staring up at you with a guilty-looking expression on her face. If you stuck around for much longer you expected Mom to get suspicious that she hadn’t heard you leave which would only complicate matters further for Sarah.

Instead, you reached out your arm for her to take and lifted her up off the floor, bringing her to her feet so that you could both leave the hallway. After a quick glance behind you to make sure Mom hadn’t gotten up straight away, you pushed Sarah to walk in front of you and made your way up the stairs to safety.

You got the added benefit of watching Sarah’s butt in front of you while she climbed the stairs in only her panties covering her behind but your staring was short-lived as Sarah rushed up the stairs before she could get caught by Mom. You joined her on the landing where she had stopped but just to be on the safe side, you headed further down towards both of your rooms to avoid anyone hearing your conversation.

“So, you and Mom are…” Sarah asked as soon as you stopped outside her room.

“Yes and you didn’t seem to have any issue with that when you were watching from the door” you replied, a bit more defensively than you had meant, backtracking when you saw that Sarah looked even guiltier than before.

“Sorry, I’m not blaming you for seeing what you saw when we were clearly in a room anyone can wander into. It’s just that when Lucy caught us last time she didn’t have the best reaction to be honest. I know it might be a lot to take in even after I’ve told you about what's going on so anything you wanna ask is fine by me” you added, calming yourself down now that the rush from escaping with Sarah had passed.

“Well you did warn me but... You know, it's different seeing it with my own eyes. I didn’t think Mom would ever agree to doing that with someone, let alone her son. No offense.” Sarah said, checking to see if you were offended by her last comment.

“None taken. It took a bit of convincing for her to start doing stuff with me but she's a lot more comfortable now than she was before. I still think she wants to keep it a secret so for now I wouldn’t mention what you saw to her but you're free to if you want” you advised, seeing her nod her head.

Sarah seemed to be thinking of something and you didn’t have anywhere to be at the moment so you waited for her to snap out of it on her own, the thought now occurring to you that you could run your and Lucy’s career ideas by her now that you had some time to kill.

“Do you think Mom will start following the rules you made now that she's together with you?” Sarah asked out of the blue, apparently having the rules on her mind.

“The naked and masturbating ones? She hasn’t mentioned them so I don’t think she will start suddenly without a reason why. Lucy probably won't either until she's the last one out of you three… unless I can make it sound like she’s being defiant to Mom by stripping around the house but…” you replied, considering the options to get your rules to be actually used around the house by Lucy and Mom.

“So you think I should be the first?” Sarah asked, her train of thought different from your own but still suggesting something you can work with.

“It would probably help me to convince Mom, yeah. Plus, I’d get easy access to grope you whenever I want” you answered, moving closer to her and grabbing her panty-clad ass to give her closest cheek and quick squeeze.

Sarah seemed to enjoy the contact as you let your hand linger against her behind but her expression changed to show she didn’t seem ready to be open about her kink around Mom and Lucy quite yet. The possibility of it however was on her mind so hopefully with a little more thought on her part, she would make up her mind.

“You can do whatever you want and whenever you want. There's no rush” you reassured, changing the topic to not sound pushy.

“Speaking of doing whatever you want, I've got a couple ideas about your career if you wanna take a look?” you asked, seeing a smile return to her face.

“Really?” Sarah asked in excitement, happy that you had gone out of your way for her.

“Of course, you asked me to right? I think I have it still on my PC if you want to see” you replied, with Sarah enthusiastically nodding and rushing off towards your room ahead of you and out of your sight, hoping she would like the suggestions you and Lucy had come up with.

Author's note: Sorry for the later chapter. Real life stuff got in the way after the break but hopefully the schedule should remain unchanged :)