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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?
histrionic obsidian idiot
  10/11/24
I dunno. What if she has a nice ass?
cerebral filthpig turdskin
  10/11/24
more detail plz
Bossy Chest-beating Dysfunction Famous Landscape Painting
  10/11/24
...
cerebral filthpig turdskin
  10/11/24
It probably depends on how much you hate your bio parent and...
Laughsome affirmative action trailer park
  10/11/24
do u know what a sister in law is?
Wonderful Reading Party
  10/11/24
he's watched too much porn
drab home
  10/11/24
Objection, nonresponsive
Laughsome affirmative action trailer park
  10/11/24
...
Bisexual university
  12/23/25
I do but I prefer fantasizing about my non-existent step sis...
Laughsome affirmative action trailer park
  10/11/24
Not sure if this analysis is on point. The less it's justifi...
supple cuckoldry brunch
  10/11/24
sleeping with anyone within your orbit of friends & fami...
Racy circlehead
  10/11/24
mostly cr
histrionic obsidian idiot
  10/11/24
...
Claret stubborn stage death wish
  10/12/24
this is exactly why I never sleep with my wife
irradiated point doctorate
  12/23/25
depends on if your wife is dead or not
drab home
  10/11/24
i believe this is colloquially known as "the biden rule...
Racy circlehead
  10/11/24
...
dashing office ladyboy
  11/30/25
only if you don't take pictures to share with us
Mind-boggling crimson twinkling uncleanness
  10/11/24
(martin brodeur)
sinister slate principal's office old irish cottage
  10/11/24
Anyone who doesn't at least understand the temptation doesn'...
Diverse station
  10/12/24
This. Plus they are always hugging and kissing you.
vivacious misanthropic mood
  10/12/24
...
Mind-boggling crimson twinkling uncleanness
  12/23/25
Wtf
histrionic obsidian idiot
  10/12/24
This is my life. Constant blue balls.
Diverse station
  10/12/24
...
Bossy Chest-beating Dysfunction Famous Landscape Painting
  11/30/25
i'm married to the younger hotter sister, and the temptation...
...,,..;...,,..,..,...,,,;..,
  06/03/26
Is she a spicy Latina?
insane boltzmann
  10/12/24
...
dashing office ladyboy
  11/30/25
Youngest SiL is trim, has a 180 ass and is always kissing me...
vivacious misanthropic mood
  10/12/24
180
glittery cruel-hearted roommate
  10/12/24
...
Bearded multi-colored kitchen
  10/12/24
twist: the sil was Catherine of aragorn
Tripping Motley Market
  10/12/24
If first brother was childless then this is classic Levirate...
Cowardly Dingle Berry
  10/12/24
...
Bearded multi-colored kitchen
  10/12/24
He's literally the closest replacement for the guy. I can't ...
Cowardly Dingle Berry
  10/12/24
...
Bearded multi-colored kitchen
  10/12/24
You're doing it for the purpose of having children, through ...
Cowardly Dingle Berry
  10/13/24
are we talking about your wife's sister or your brother's wi...
Aquamarine partner
  10/12/24
How many times do we have to go over this.
adventurous gay wizard indian lodge
  10/12/24
...
Self-centered lodge prole
  10/12/24
...
dashing office ladyboy
  11/30/25
...
Self-centered lodge prole
  12/23/25
...
Bisexual university
  12/23/25
...
tantric marketing idea brethren
  12/23/25
...
gedood persoon
  06/03/26
...
Emilio Estevez circa 2032
  06/03/26
...
Mailer Daemon
  06/03/26
...
Emilio Estevez circa 2032
  06/03/26
yes
concupiscible iridescent library
  10/12/24
voice of reason as always cbtp
histrionic obsidian idiot
  10/12/24
not as deranged as brother-in-law
Contagious gaped persian
  10/12/24
Wife’s sister or your bros wife = deranged wife&rsq...
chartreuse embarrassed to the bone scourge upon the earth
  12/23/25


Poast new message in this thread



Reply Favorite

Date: October 11th, 2024 4:34 PM
Author: histrionic obsidian idiot

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: cerebral filthpig turdskin

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: Bossy Chest-beating Dysfunction Famous Landscape Painting

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: cerebral filthpig turdskin



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



Reply Favorite

Date: October 11th, 2024 4:40 PM
Author: Laughsome affirmative action trailer park

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: Wonderful Reading Party

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: drab home

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: Laughsome affirmative action trailer park

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: Bisexual university



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



Reply Favorite

Date: October 11th, 2024 7:50 PM
Author: Laughsome affirmative action trailer park

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: supple cuckoldry brunch

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: Racy circlehead

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: histrionic obsidian idiot

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: Claret stubborn stage death wish



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



Reply Favorite

Date: December 23rd, 2025 2:58 AM
Author: irradiated point doctorate

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: drab home

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: Racy circlehead

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 office ladyboy



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



Reply Favorite

Date: October 11th, 2024 4:48 PM
Author: Mind-boggling crimson twinkling uncleanness

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: sinister slate principal's office old irish cottage

(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: Diverse station

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: vivacious misanthropic mood

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: Mind-boggling crimson twinkling uncleanness



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



Reply Favorite

Date: October 12th, 2024 3:45 PM
Author: histrionic obsidian idiot

Wtf

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



Reply Favorite

Date: October 12th, 2024 5:01 PM
Author: Diverse station

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: Bossy Chest-beating Dysfunction Famous Landscape Painting



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



Reply Favorite

Date: June 3rd, 2026 4:32 PM
Author: ...,,..;...,,..,..,...,,,;..,


i'm married to the younger hotter sister, and the temptation is still 100% there for the older less-hot SIL for exactly the same reasons you mentioned.

(http://www.autoadmit.com/thread.php?thread_id=5610171&forum_id=2]#49913429)



Reply Favorite

Date: October 12th, 2024 11:41 AM
Author: insane boltzmann

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 office ladyboy



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



Reply Favorite

Date: October 12th, 2024 11:44 AM
Author: vivacious misanthropic mood

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: glittery cruel-hearted roommate

180

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



Reply Favorite

Date: October 12th, 2024 11:48 AM
Author: Bearded multi-colored kitchen



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



Reply Favorite

Date: October 12th, 2024 3:17 PM
Author: Tripping Motley Market

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: Cowardly Dingle Berry

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: Bearded multi-colored kitchen



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



Reply Favorite

Date: October 12th, 2024 3:34 PM
Author: Cowardly Dingle Berry

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: Bearded multi-colored kitchen



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



Reply Favorite

Date: October 13th, 2024 12:04 AM
Author: Cowardly Dingle Berry

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: Aquamarine partner

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: adventurous gay wizard indian lodge

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: Self-centered lodge prole



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



Reply Favorite

Date: November 30th, 2025 4:48 PM
Author: dashing office ladyboy



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



Reply Favorite

Date: December 23rd, 2025 2:34 AM
Author: Self-centered lodge prole



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



Reply Favorite

Date: December 23rd, 2025 2:46 AM
Author: Bisexual university



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



Reply Favorite

Date: December 23rd, 2025 6:43 AM
Author: tantric marketing idea brethren



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



Reply Favorite

Date: June 3rd, 2026 3:03 PM
Author: gedood persoon



(http://www.autoadmit.com/thread.php?thread_id=5610171&forum_id=2]#49913228)



Reply Favorite

Date: June 3rd, 2026 3:08 PM
Author: Emilio Estevez circa 2032



(http://www.autoadmit.com/thread.php?thread_id=5610171&forum_id=2]#49913235)



Reply Favorite

Date: June 3rd, 2026 3:20 PM
Author: Mailer Daemon



(http://www.autoadmit.com/thread.php?thread_id=5610171&forum_id=2]#49913261)



Reply Favorite

Date: June 3rd, 2026 4:24 PM
Author: Emilio Estevez circa 2032



(http://www.autoadmit.com/thread.php?thread_id=5610171&forum_id=2]#49913390)



Reply Favorite

Date: October 12th, 2024 11:51 AM
Author: concupiscible iridescent library

yes

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



Reply Favorite

Date: October 12th, 2024 4:02 PM
Author: histrionic obsidian idiot

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: Contagious gaped persian

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: chartreuse embarrassed to the bone scourge upon the earth

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)