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Having sex with your sister in law is completely deranged, right?

Nobody moral would do this, right? These are just jokes?
Comical Sneaky Criminal
  10/11/24
I dunno. What if she has a nice ass?
appetizing gunner whorehouse
  10/11/24
more detail plz
beady-eyed milky hominid liquid oxygen
  10/11/24
...
appetizing gunner whorehouse
  10/11/24
It probably depends on how much you hate your bio parent and...
marvelous mad cow disease haunted graveyard
  10/11/24
do u know what a sister in law is?
elite trip bawdyhouse juggernaut
  10/11/24
he's watched too much porn
Razzle-dazzle newt factory reset button
  10/11/24
Objection, nonresponsive
marvelous mad cow disease haunted graveyard
  10/11/24
...
Violet self-absorbed national legend
  12/23/25
I do but I prefer fantasizing about my non-existent step sis...
marvelous mad cow disease haunted graveyard
  10/11/24
Not sure if this analysis is on point. The less it's justifi...
deep shimmering personal credit line people who are hurt
  10/11/24
sleeping with anyone within your orbit of friends & fami...
Mischievous Market
  10/11/24
mostly cr
Comical Sneaky Criminal
  10/11/24
...
heady therapy alpha
  10/12/24
this is exactly why I never sleep with my wife
cyan antidepressant drug
  12/23/25
depends on if your wife is dead or not
Razzle-dazzle newt factory reset button
  10/11/24
i believe this is colloquially known as "the biden rule...
Mischievous Market
  10/11/24
...
dashing turquoise marketing idea
  11/30/25
only if you don't take pictures to share with us
Sick floppy locale
  10/11/24
(martin brodeur)
smoky chapel
  10/11/24
Anyone who doesn't at least understand the temptation doesn'...
Crystalline tripping resort codepig
  10/12/24
This. Plus they are always hugging and kissing you.
provocative pearly dopamine wrinkle
  10/12/24
...
Sick floppy locale
  12/23/25
Wtf
Comical Sneaky Criminal
  10/12/24
This is my life. Constant blue balls.
Crystalline tripping resort codepig
  10/12/24
...
beady-eyed milky hominid liquid oxygen
  11/30/25
Is she a spicy Latina?
Hateful Stock Car Laser Beams
  10/12/24
...
dashing turquoise marketing idea
  11/30/25
Youngest SiL is trim, has a 180 ass and is always kissing me...
provocative pearly dopamine wrinkle
  10/12/24
180
bateful police squad
  10/12/24
...
twisted kitty cat pervert
  10/12/24
twist: the sil was Catherine of aragorn
Azure garrison
  10/12/24
If first brother was childless then this is classic Levirate...
Talking coral casino
  10/12/24
...
twisted kitty cat pervert
  10/12/24
He's literally the closest replacement for the guy. I can't ...
Talking coral casino
  10/12/24
...
twisted kitty cat pervert
  10/12/24
You're doing it for the purpose of having children, through ...
Talking coral casino
  10/13/24
are we talking about your wife's sister or your brother's wi...
soul-stirring theatre boltzmann
  10/12/24
How many times do we have to go over this.
avocado library famous landscape painting
  10/12/24
...
Nubile headpube menage
  10/12/24
...
dashing turquoise marketing idea
  11/30/25
...
Nubile headpube menage
  12/23/25
...
Violet self-absorbed national legend
  12/23/25
...
Plum mood
  12/23/25
yes
disgusting passionate box office
  10/12/24
voice of reason as always cbtp
Comical Sneaky Criminal
  10/12/24
not as deranged as brother-in-law
lascivious weed whacker
  10/12/24
Wife’s sister or your bros wife = deranged wife&rsq...
Cream violent plaza
  12/23/25


Poast new message in this thread



Reply Favorite

Date: October 11th, 2024 4:34 PM
Author: Comical Sneaky Criminal

Nobody moral would do this, right? These are just jokes?

(http://www.autoadmit.com/thread.php?thread_id=5610171&forum_id=2/#48187983)



Reply Favorite

Date: October 11th, 2024 4:34 PM
Author: appetizing gunner whorehouse

I dunno. What if she has a nice ass?

(http://www.autoadmit.com/thread.php?thread_id=5610171&forum_id=2/#48187985)



Reply Favorite

Date: October 11th, 2024 4:35 PM
Author: beady-eyed milky hominid liquid oxygen

more detail plz

(http://www.autoadmit.com/thread.php?thread_id=5610171&forum_id=2/#48187988)



Reply Favorite

Date: October 11th, 2024 4:37 PM
Author: appetizing gunner whorehouse



(http://www.autoadmit.com/thread.php?thread_id=5610171&forum_id=2/#48187993)



Reply Favorite

Date: October 11th, 2024 4:40 PM
Author: marvelous mad cow disease haunted graveyard

It probably depends on how much you hate your bio parent and stepparent. If eg I was a Chadly 16 year old and a drunk, verbally abusive stepdad moved into my house with me and my mom, and he brought along his hot 15 year old daughter, I could see how fucking the shit out of his 15 year old daughter might be beneficial for me and my mom.

(http://www.autoadmit.com/thread.php?thread_id=5610171&forum_id=2/#48188001)



Reply Favorite

Date: October 11th, 2024 4:41 PM
Author: elite trip bawdyhouse juggernaut

do u know what a sister in law is?

(http://www.autoadmit.com/thread.php?thread_id=5610171&forum_id=2/#48188004)



Reply Favorite

Date: October 11th, 2024 4:44 PM
Author: Razzle-dazzle newt factory reset button

he's watched too much porn

(http://www.autoadmit.com/thread.php?thread_id=5610171&forum_id=2/#48188017)



Reply Favorite

Date: October 11th, 2024 7:51 PM
Author: marvelous mad cow disease haunted graveyard

Objection, nonresponsive

(http://www.autoadmit.com/thread.php?thread_id=5610171&forum_id=2/#48188617)



Reply Favorite

Date: December 23rd, 2025 2:44 AM
Author: Violet self-absorbed national legend



(http://www.autoadmit.com/thread.php?thread_id=5610171&forum_id=2/#49533041)



Reply Favorite

Date: October 11th, 2024 7:50 PM
Author: marvelous mad cow disease haunted graveyard

I do but I prefer fantasizing about my non-existent step sister. I originally meant to go back to the beginning of this and add some intro that set up the pivot, but I forgot to do that.

Given the XO stipulation that we’re limiting the discussion to wife’s sister and brother’s wife is obviously off limits, it would require a wife that is truly evil and awful to justify it, and no kids can be involved for anyone. That said, it would be literally the greatest spite sex ever, if justified, and also a real life-threatening peak experience since by definition any wife awful enough to deserve to get cucked by her own sister would be fully capable of murdering both of you. So in that 1/100k scenario where you made the mistake of marrying the literal devil it’s not only justified it’s incredibly hot.

(http://www.autoadmit.com/thread.php?thread_id=5610171&forum_id=2/#48188616)



Reply Favorite

Date: October 11th, 2024 8:22 PM
Author: deep shimmering personal credit line people who are hurt

Not sure if this analysis is on point. The less it's justified the hotter it is imo

Scandal is the very foundation of the SIL Fetish

(http://www.autoadmit.com/thread.php?thread_id=5610171&forum_id=2/#48188745)



Reply Favorite

Date: October 11th, 2024 4:42 PM
Author: Mischievous Market

sleeping with anyone within your orbit of friends & family is insane and doomed

(http://www.autoadmit.com/thread.php?thread_id=5610171&forum_id=2/#48188009)



Reply Favorite

Date: October 11th, 2024 4:50 PM
Author: Comical Sneaky Criminal

mostly cr

(http://www.autoadmit.com/thread.php?thread_id=5610171&forum_id=2/#48188040)



Reply Favorite

Date: October 12th, 2024 3:21 PM
Author: heady therapy alpha



(http://www.autoadmit.com/thread.php?thread_id=5610171&forum_id=2/#48190661)



Reply Favorite

Date: December 23rd, 2025 2:58 AM
Author: cyan antidepressant drug

this is exactly why I never sleep with my wife

(http://www.autoadmit.com/thread.php?thread_id=5610171&forum_id=2/#49533050)



Reply Favorite

Date: October 11th, 2024 4:44 PM
Author: Razzle-dazzle newt factory reset button

depends on if your wife is dead or not

(http://www.autoadmit.com/thread.php?thread_id=5610171&forum_id=2/#48188014)



Reply Favorite

Date: October 11th, 2024 4:44 PM
Author: Mischievous Market

i believe this is colloquially known as "the biden rule"

(http://www.autoadmit.com/thread.php?thread_id=5610171&forum_id=2/#48188018)



Reply Favorite

Date: November 30th, 2025 4:48 PM
Author: dashing turquoise marketing idea



(http://www.autoadmit.com/thread.php?thread_id=5610171&forum_id=2/#49472648)



Reply Favorite

Date: October 11th, 2024 4:48 PM
Author: Sick floppy locale

only if you don't take pictures to share with us

(http://www.autoadmit.com/thread.php?thread_id=5610171&forum_id=2/#48188026)



Reply Favorite

Date: October 11th, 2024 8:14 PM
Author: smoky chapel

(martin brodeur)

(http://www.autoadmit.com/thread.php?thread_id=5610171&forum_id=2/#48188717)



Reply Favorite

Date: October 12th, 2024 10:56 AM
Author: Crystalline tripping resort codepig

Anyone who doesn't at least understand the temptation doesn't have a hotter young SiL.

It's a combination of many factors. She's a hotter, younger version of your wife (who you were already naturally attracted to--they share the same genes).

She's often proximate to you including during revealing, semi-intimate moments--e.g., lounging around in her robe, changing adjacent to go to the beach, at the pool in her bikini, at a cabin getting dressed in the morning, casually walking into your room while you're getting dressed, asking you to pass her a towel, etc.

The SiL has a natural temptation and desire--this can be conscious or subconscious--to fuck with her sister like all good classic fucked up female relationships and one obvious way to do it is to tempt the sister's husband.

It's a toxic stew that results in you constantly having a throbbing cock around your SiL's pendulous breasts and warm luscious hairy honeypit that she semi-regularly flashes you with even as your rational mind tells you this would be the worst decision you ever made because inevitably it will come back to haunt you and blow up your life.

Thank

(http://www.autoadmit.com/thread.php?thread_id=5610171&forum_id=2/#48189844)



Reply Favorite

Date: October 12th, 2024 11:38 AM
Author: provocative pearly dopamine wrinkle

This. Plus they are always hugging and kissing you.

(http://www.autoadmit.com/thread.php?thread_id=5610171&forum_id=2/#48189951)



Reply Favorite

Date: December 23rd, 2025 6:52 AM
Author: Sick floppy locale



(http://www.autoadmit.com/thread.php?thread_id=5610171&forum_id=2/#49533178)



Reply Favorite

Date: October 12th, 2024 3:45 PM
Author: Comical Sneaky Criminal

Wtf

(http://www.autoadmit.com/thread.php?thread_id=5610171&forum_id=2/#48190745)



Reply Favorite

Date: October 12th, 2024 5:01 PM
Author: Crystalline tripping resort codepig

This is my life. Constant blue balls.

(http://www.autoadmit.com/thread.php?thread_id=5610171&forum_id=2/#48190953)



Reply Favorite

Date: November 30th, 2025 4:44 PM
Author: beady-eyed milky hominid liquid oxygen



(http://www.autoadmit.com/thread.php?thread_id=5610171&forum_id=2/#49472629)



Reply Favorite

Date: October 12th, 2024 11:41 AM
Author: Hateful Stock Car Laser Beams

Is she a spicy Latina?

(http://www.autoadmit.com/thread.php?thread_id=5610171&forum_id=2/#48189956)



Reply Favorite

Date: November 30th, 2025 4:48 PM
Author: dashing turquoise marketing idea



(http://www.autoadmit.com/thread.php?thread_id=5610171&forum_id=2/#49472649)



Reply Favorite

Date: October 12th, 2024 11:44 AM
Author: provocative pearly dopamine wrinkle

Youngest SiL is trim, has a 180 ass and is always kissing me on the lips. Hard not to think about it.

(http://www.autoadmit.com/thread.php?thread_id=5610171&forum_id=2/#48189964)



Reply Favorite

Date: October 12th, 2024 3:45 PM
Author: bateful police squad

180

(http://www.autoadmit.com/thread.php?thread_id=5610171&forum_id=2/#48190744)



Reply Favorite

Date: October 12th, 2024 11:48 AM
Author: twisted kitty cat pervert



(http://www.autoadmit.com/thread.php?thread_id=5610171&forum_id=2/#48189979)



Reply Favorite

Date: October 12th, 2024 3:17 PM
Author: Azure garrison

twist: the sil was Catherine of aragorn

(http://www.autoadmit.com/thread.php?thread_id=5610171&forum_id=2/#48190647)



Reply Favorite

Date: October 12th, 2024 3:20 PM
Author: Talking coral casino

If first brother was childless then this is classic Levirate marriage out of Deuteronomy

(http://www.autoadmit.com/thread.php?thread_id=5610171&forum_id=2/#48190659)



Reply Favorite

Date: October 12th, 2024 3:25 PM
Author: twisted kitty cat pervert



(http://www.autoadmit.com/thread.php?thread_id=5610171&forum_id=2/#48190672)



Reply Favorite

Date: October 12th, 2024 3:34 PM
Author: Talking coral casino

He's literally the closest replacement for the guy. I can't think of anything more natural.

(http://www.autoadmit.com/thread.php?thread_id=5610171&forum_id=2/#48190707)



Reply Favorite

Date: October 12th, 2024 3:38 PM
Author: twisted kitty cat pervert



(http://www.autoadmit.com/thread.php?thread_id=5610171&forum_id=2/#48190723)



Reply Favorite

Date: October 13th, 2024 12:04 AM
Author: Talking coral casino

You're doing it for the purpose of having children, through whom your brother lives on. Nothing could be a bigger solid for the guy.

(http://www.autoadmit.com/thread.php?thread_id=5610171&forum_id=2/#48191875)



Reply Favorite

Date: October 12th, 2024 11:50 AM
Author: soul-stirring theatre boltzmann

are we talking about your wife's sister or your brother's wife?

(http://www.autoadmit.com/thread.php?thread_id=5610171&forum_id=2/#48189984)



Reply Favorite

Date: October 12th, 2024 11:52 AM
Author: avocado library famous landscape painting

How many times do we have to go over this.

(http://www.autoadmit.com/thread.php?thread_id=5610171&forum_id=2/#48189992)



Reply Favorite

Date: October 12th, 2024 4:01 PM
Author: Nubile headpube menage



(http://www.autoadmit.com/thread.php?thread_id=5610171&forum_id=2/#48190799)



Reply Favorite

Date: November 30th, 2025 4:48 PM
Author: dashing turquoise marketing idea



(http://www.autoadmit.com/thread.php?thread_id=5610171&forum_id=2/#49472653)



Reply Favorite

Date: December 23rd, 2025 2:34 AM
Author: Nubile headpube menage



(http://www.autoadmit.com/thread.php?thread_id=5610171&forum_id=2/#49533037)



Reply Favorite

Date: December 23rd, 2025 2:46 AM
Author: Violet self-absorbed national legend



(http://www.autoadmit.com/thread.php?thread_id=5610171&forum_id=2/#49533043)



Reply Favorite

Date: December 23rd, 2025 6:43 AM
Author: Plum mood



(http://www.autoadmit.com/thread.php?thread_id=5610171&forum_id=2/#49533170)



Reply Favorite

Date: October 12th, 2024 11:51 AM
Author: disgusting passionate box office

yes

(http://www.autoadmit.com/thread.php?thread_id=5610171&forum_id=2/#48189990)



Reply Favorite

Date: October 12th, 2024 4:02 PM
Author: Comical Sneaky Criminal

voice of reason as always cbtp

(http://www.autoadmit.com/thread.php?thread_id=5610171&forum_id=2/#48190802)



Reply Favorite

Date: October 12th, 2024 11:57 AM
Author: lascivious weed whacker

not as deranged as brother-in-law

(http://www.autoadmit.com/thread.php?thread_id=5610171&forum_id=2/#48190004)



Reply Favorite

Date: December 23rd, 2025 7:03 AM
Author: Cream violent plaza

Wife’s sister or your bros wife = deranged

wife’s bros wife = still deranged but less so

Sister of BIL or SIL not directly related to your wife = fair game except for the whole infidelity thing

(http://www.autoadmit.com/thread.php?thread_id=5610171&forum_id=2/#49533184)