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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?
Orchid Azn
  10/11/24
I dunno. What if she has a nice ass?
azure business firm ratface
  10/11/24
more detail plz
bisexual adventurous party of the first part patrolman
  10/11/24
...
azure business firm ratface
  10/11/24
It probably depends on how much you hate your bio parent and...
Apoplectic Property
  10/11/24
do u know what a sister in law is?
dark spectacular halford plaza
  10/11/24
he's watched too much porn
Amber Dysfunction Feces
  10/11/24
Objection, nonresponsive
Apoplectic Property
  10/11/24
...
misanthropic burgundy rigpig coffee pot
  12/23/25
I do but I prefer fantasizing about my non-existent step sis...
Apoplectic Property
  10/11/24
Not sure if this analysis is on point. The less it's justifi...
useless black woman center
  10/11/24
sleeping with anyone within your orbit of friends & fami...
exciting seedy library
  10/11/24
mostly cr
Orchid Azn
  10/11/24
...
stirring location
  10/12/24
this is exactly why I never sleep with my wife
Multi-colored slimy water buffalo school cafeteria
  12/23/25
depends on if your wife is dead or not
Amber Dysfunction Feces
  10/11/24
i believe this is colloquially known as "the biden rule...
exciting seedy library
  10/11/24
...
territorial misunderstood meetinghouse
  11/30/25
only if you don't take pictures to share with us
Navy Toilet Seat Corner
  10/11/24
(martin brodeur)
Mauve Massive Ticket Booth
  10/11/24
Anyone who doesn't at least understand the temptation doesn'...
Marvelous Legal Warrant
  10/12/24
This. Plus they are always hugging and kissing you.
Tan fiercely-loyal main people
  10/12/24
...
Navy Toilet Seat Corner
  12/23/25
Wtf
Orchid Azn
  10/12/24
This is my life. Constant blue balls.
Marvelous Legal Warrant
  10/12/24
...
bisexual adventurous party of the first part patrolman
  11/30/25
i'm married to the younger hotter sister, and the temptation...
...,,..;...,,..,..,...,,,;..,
  06/03/26
Is she a spicy Latina?
Appetizing whorehouse
  10/12/24
...
territorial misunderstood meetinghouse
  11/30/25
Youngest SiL is trim, has a 180 ass and is always kissing me...
Tan fiercely-loyal main people
  10/12/24
180
Plum charismatic generalized bond market
  10/12/24
...
big ruddy quadroon den
  10/12/24
twist: the sil was Catherine of aragorn
glittery state genital piercing
  10/12/24
If first brother was childless then this is classic Levirate...
deranged giraffe kitty cat
  10/12/24
...
big ruddy quadroon den
  10/12/24
He's literally the closest replacement for the guy. I can't ...
deranged giraffe kitty cat
  10/12/24
...
big ruddy quadroon den
  10/12/24
You're doing it for the purpose of having children, through ...
deranged giraffe kitty cat
  10/13/24
are we talking about your wife's sister or your brother's wi...
racy flesh tanning salon place of business
  10/12/24
How many times do we have to go over this.
Maize Metal Temple
  10/12/24
...
claret twinkling uncleanness
  10/12/24
...
territorial misunderstood meetinghouse
  11/30/25
...
claret twinkling uncleanness
  12/23/25
...
misanthropic burgundy rigpig coffee pot
  12/23/25
...
olive spot
  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
Hyperventilating aggressive parlour
  10/12/24
voice of reason as always cbtp
Orchid Azn
  10/12/24
not as deranged as brother-in-law
Magenta codepig
  10/12/24
Wife’s sister or your bros wife = deranged wife&rsq...
Rambunctious Personal Credit Line Station
  12/23/25


Poast new message in this thread



Reply Favorite

Date: October 11th, 2024 4:34 PM
Author: Orchid Azn

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: azure business firm ratface

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: bisexual adventurous party of the first part patrolman

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: azure business firm ratface



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



Reply Favorite

Date: October 11th, 2024 4:40 PM
Author: Apoplectic Property

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: dark spectacular halford plaza

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: Amber Dysfunction Feces

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: Apoplectic Property

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: misanthropic burgundy rigpig coffee pot



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



Reply Favorite

Date: October 11th, 2024 7:50 PM
Author: Apoplectic Property

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: useless black woman center

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: exciting seedy library

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: Orchid Azn

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: stirring location



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



Reply Favorite

Date: December 23rd, 2025 2:58 AM
Author: Multi-colored slimy water buffalo school cafeteria

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: Amber Dysfunction Feces

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: exciting seedy library

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: territorial misunderstood meetinghouse



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



Reply Favorite

Date: October 11th, 2024 4:48 PM
Author: Navy Toilet Seat Corner

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: Mauve Massive Ticket Booth

(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: Marvelous Legal Warrant

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: Tan fiercely-loyal main people

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: Navy Toilet Seat Corner



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



Reply Favorite

Date: October 12th, 2024 3:45 PM
Author: Orchid Azn

Wtf

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



Reply Favorite

Date: October 12th, 2024 5:01 PM
Author: Marvelous Legal Warrant

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: bisexual adventurous party of the first part patrolman



(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: Appetizing whorehouse

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: territorial misunderstood meetinghouse



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



Reply Favorite

Date: October 12th, 2024 11:44 AM
Author: Tan fiercely-loyal main people

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: Plum charismatic generalized bond market

180

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



Reply Favorite

Date: October 12th, 2024 11:48 AM
Author: big ruddy quadroon den



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



Reply Favorite

Date: October 12th, 2024 3:17 PM
Author: glittery state genital piercing

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: deranged giraffe kitty cat

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: big ruddy quadroon den



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



Reply Favorite

Date: October 12th, 2024 3:34 PM
Author: deranged giraffe kitty cat

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: big ruddy quadroon den



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



Reply Favorite

Date: October 13th, 2024 12:04 AM
Author: deranged giraffe kitty cat

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: racy flesh tanning salon place of business

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: Maize Metal Temple

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: claret twinkling uncleanness



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



Reply Favorite

Date: November 30th, 2025 4:48 PM
Author: territorial misunderstood meetinghouse



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



Reply Favorite

Date: December 23rd, 2025 2:34 AM
Author: claret twinkling uncleanness



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



Reply Favorite

Date: December 23rd, 2025 2:46 AM
Author: misanthropic burgundy rigpig coffee pot



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



Reply Favorite

Date: December 23rd, 2025 6:43 AM
Author: olive spot



(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: Hyperventilating aggressive parlour

yes

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



Reply Favorite

Date: October 12th, 2024 4:02 PM
Author: Orchid Azn

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: Magenta codepig

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: Rambunctious Personal Credit Line Station

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)