OKAY, I PROMISE... I PLANNED TO TYPE JUST A SHORT PARAGRAPH - BUT MY IMAGINATION GOT THE BETTER OF ME - SO TO ALL THOSE WHO CAN READ IT PATIENTLY.... ENJOY!

---------------------------------------------------

B1-S2 are dating. They start fooling around at S2's house (preferably on a bed). They get unequally half naked and go as far as serious kissing while hands on each other's sweet spots. B2 walks in on them by chance. B2 is upset, angry, and wants B1 to leave the house immediately.

B1 pulls B2 aside and he begs B2 to let him just finish getting the HJ bcos he's close to cumming and he's joining the army and he won't be able to see S2 for a long time. B1 also confesses he won't be able to fit his cock in pants unless he loses his erection.

B2 appreciates B1's candor and (reluctantly) agrees to let him finish getting his HJ but on one condition... B2 will stay and make sure they get it done quickly. S2 is not amused and begs for his brother to leave the room but B2 says it's either this or nothing. B1-S2 hesitantly resume their interaction.

At first B2 is just looking out the window or is on his phone or doing anything to avoid directly looking at them. But B1-S2 end up having a really sultry passionate make-out session. They keep amazing eye contact with each other and do dirty talk. At one point, B2 can't take his eyes off of them. B2 gets a boner in his pants and he massages it. B1 does such a good job flicking S2, he makes S2 cum!

As things calm down for a minute, S2 turns around to find B2's boner bulging in his pants. S2 is surprised but not disgusted. S2 just teases B2 saying, "Really?". After a second of awkward silence, S2 continues, "Well, I can't believe I just came in front of you."

B2 tries to save face. B2 changes topic, looks at B1 and says, "Dude, you were the one who was suppose to cum! Wtf!"

B1 apologizes and says that he just got carried away in the moment. B2 whispers, "Who wouldn't?". B1 hears this and thinks of a devious plan. When S2 catches her breath and begins to stroke B1 again, B1 tells B2 that it might help him finish sooner if S2 can put her mouth on it.

B2 is dazed at this point. He just crashes into a sofa or chair or whatever that's near the bed. B2 disinterestedly agrees and continues to massage his boner as he witnesses S2 give B1 a BJ. Sometimes, during some positions, the ONLY view that B2 gets is S2's sweet pussy held high up as she bends over while kneeling to suck off B1. Situations like this confuses B2 but he can't look away and it only makes him harder.

B1 notices this and tells B2 to pull his dick out and stroke it comfortably. S2 is shocked at that quip. S2 whispers to B1, "Wtf S2? That is not cool." B1 whispers back, "Come on, he's allowing us to do this, isn't he? Look at my shaft? It's throbbing for you. Don't you want to ride it? Don't you?". S2 whispers, "I do...", B1 whispers back, "Then, let's just keep him happy.... whatever it takes, what do you say?". S2 flashes a smile and resumes sucking.

B2 pulls his dick out and starts wanking it. Slowly, he moves around to get better view of the action and he moves closer and closer to the B1-S2 couple.

Now, we introduce S1 who has been waiting in her car for almost 15mins outside S2-B2's house to pick up B1. B1 completely forgot that he asked his sister to pick him up. B1's "original" plan did not anticipate B2 walking in on his playtime with S2. S1 honks her car from time to time but nothing happens.

S1 gets kinda worried. Leaves the car, knocks on the front door, but no answer. She tries the door handle and the door opens. She makes her way inside and calls out but no answer. She begins to explore and starts hearing heavy breathing or moaning from the bedroom. She enters the bedroom and finds B1-S2 doing a 69 on each other while B2 is jerking off at an arm's length from them.

S1 goes, "WTF?!" and she goes on that streak for about half a minute.

B1 jumps up, pulls S1 aside, and quickly explains what's happened, all while his dick is still rock hard pointing directly at S1 and probably just a inch away from touching her belly. While B1 is genuinely trying to explain the situation, S1 can't avoid noticing that her brother's dick is just an inch away from her and tries to avoid it but at the time same can't stop looking at it (perhaps purely out of curiosity or amazement).

B1 eventually convinces S1 to wait for him while he will quickly try to cum. S1 goes, "Well, where the fuck do you want me to wait?" B1 goes, "Um... B2 is here so I suppose you could do the same I guess. Here, just sit on this corner of the bed."

Now, B1-S2 resume with their passionate kissing, but this time, after a minute intense making out and B1's cock rubbing against S2's belly, B1 without even asking for B2's permission, B1 just inserts his cock into S2's drenched pussy. B2 is amazed and begins to stroke harder. S1's eyes go wide and she begins to break a sweat.

The B1-S2 sex starts becoming intense and sweaty. B1 really starts ramming S2 fast and hard. S1's sweat starts drenching her top. B2 notices this and quips, "I know you're turned on looking at these two rabbits. Just live in the moment. Touch yourself if you need. Go ahead, put your hand between your legs."

S1 very slowly begins to touch herself over her clothes. After a whole minute of sloppy caressing and partial nudity, she reluctantly puts her hand inside her panty and starts to rub. After a point, B2 notices that S1 really likes her breasts massaged but she has only one hand for it bcos she's got one in her pants. B2 slowly walks up behind S1 and whispers in her ear, "Here, let me help you with that." and he slowly reaches for S1's tits.

S1 tries to fake-push away B2's hand but eventually lets him grab them and fondle with them as he wishes. After a minute or two, B2 slowly moves his hand down S1's chest, across her belly and eventually completely cups her pussy and begins rubbing her clit. S1 is shocked that B2 did this without asking her permission, but she's enjoying it, and she allows him to do whatever he wants as she whips her head back over his shoulder or chest.

------- I guess, from this point on, the plot can follow the standard flow of events that we often request in the swap series ------ accident and/or secret interactions between siblings, then intentional or open interactions, then full unswap ----- and at the end of it, the siblings asking themselves, "Wtf just happened?!?"

THE END

If this plot ever get made ---- I would ask that S1 and B2 be the older siblings (like, old by a whole bunch of years), and S2 and B1 be the youngest they can legally be.

My dream cast for this plot??? -----S1 can be Kenzie Love (yes, she can probably pull it off), or Sophia Burns, or JC Wilds, or someone with a slightly large or fleshy or tall build.S2 can be Leana Lovings or someone small and cute.