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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?
Supple angry brunch personal credit line
  10/11/24
I dunno. What if she has a nice ass?
brass wonderful idiot institution
  10/11/24
more detail plz
Tan multi-colored elastic band
  10/11/24
...
brass wonderful idiot institution
  10/11/24
It probably depends on how much you hate your bio parent and...
gaped corner immigrant
  10/11/24
do u know what a sister in law is?
Hyperventilating razzle-dazzle sanctuary lettuce
  10/11/24
he's watched too much porn
mauve diverse son of senegal library
  10/11/24
Objection, nonresponsive
gaped corner immigrant
  10/11/24
...
Odious black area roast beef
  12/23/25
I do but I prefer fantasizing about my non-existent step sis...
gaped corner immigrant
  10/11/24
Not sure if this analysis is on point. The less it's justifi...
Hairraiser Church Building Cuckold
  10/11/24
sleeping with anyone within your orbit of friends & fami...
Magical hall nibblets
  10/11/24
mostly cr
Supple angry brunch personal credit line
  10/11/24
...
Concupiscible up-to-no-good messiness whorehouse
  10/12/24
this is exactly why I never sleep with my wife
Kink-friendly location
  12/23/25
depends on if your wife is dead or not
mauve diverse son of senegal library
  10/11/24
i believe this is colloquially known as "the biden rule...
Magical hall nibblets
  10/11/24
...
Bateful sex offender
  11/30/25
only if you don't take pictures to share with us
180 Public Bath Azn
  10/11/24
(martin brodeur)
Laughsome bistre state organic girlfriend
  10/11/24
Anyone who doesn't at least understand the temptation doesn'...
Aqua Ceo Philosopher-king
  10/12/24
This. Plus they are always hugging and kissing you.
cheese-eating soul-stirring locale masturbator
  10/12/24
...
180 Public Bath Azn
  12/23/25
Wtf
Supple angry brunch personal credit line
  10/12/24
This is my life. Constant blue balls.
Aqua Ceo Philosopher-king
  10/12/24
...
Tan multi-colored elastic band
  11/30/25
i'm married to the younger hotter sister, and the temptation...
...,,..;...,,..,..,...,,,;..,
  06/03/26
Is she a spicy Latina?
very tactful marketing idea stage
  10/12/24
...
Bateful sex offender
  11/30/25
Youngest SiL is trim, has a 180 ass and is always kissing me...
cheese-eating soul-stirring locale masturbator
  10/12/24
180
Bat shit crazy forum
  10/12/24
...
charcoal lodge hairy legs
  10/12/24
twist: the sil was Catherine of aragorn
Demanding regret
  10/12/24
If first brother was childless then this is classic Levirate...
curious cream gas station digit ratio
  10/12/24
...
charcoal lodge hairy legs
  10/12/24
He's literally the closest replacement for the guy. I can't ...
curious cream gas station digit ratio
  10/12/24
...
charcoal lodge hairy legs
  10/12/24
You're doing it for the purpose of having children, through ...
curious cream gas station digit ratio
  10/13/24
are we talking about your wife's sister or your brother's wi...
Glittery bossy electric furnace
  10/12/24
How many times do we have to go over this.
cyan partner
  10/12/24
...
vibrant gunner station
  10/12/24
...
Bateful sex offender
  11/30/25
...
vibrant gunner station
  12/23/25
...
Odious black area roast beef
  12/23/25
...
lascivious frum persian den
  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
razzle fantasy-prone dingle berry fat ankles
  10/12/24
voice of reason as always cbtp
Supple angry brunch personal credit line
  10/12/24
not as deranged as brother-in-law
Ivory lay
  10/12/24
Wife’s sister or your bros wife = deranged wife&rsq...
drab trip private investor really tough guy
  12/23/25


Poast new message in this thread



Reply Favorite

Date: October 11th, 2024 4:34 PM
Author: Supple angry brunch personal credit line

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: brass wonderful idiot institution

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: Tan multi-colored elastic band

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: brass wonderful idiot institution



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



Reply Favorite

Date: October 11th, 2024 4:40 PM
Author: gaped corner immigrant

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: Hyperventilating razzle-dazzle sanctuary lettuce

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: mauve diverse son of senegal library

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: gaped corner immigrant

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: Odious black area roast beef



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



Reply Favorite

Date: October 11th, 2024 7:50 PM
Author: gaped corner immigrant

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: Hairraiser Church Building Cuckold

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: Magical hall nibblets

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: Supple angry brunch personal credit line

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: Concupiscible up-to-no-good messiness whorehouse



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



Reply Favorite

Date: December 23rd, 2025 2:58 AM
Author: Kink-friendly location

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: mauve diverse son of senegal library

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: Magical hall nibblets

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: Bateful sex offender



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



Reply Favorite

Date: October 11th, 2024 4:48 PM
Author: 180 Public Bath Azn

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: Laughsome bistre state organic girlfriend

(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: Aqua Ceo Philosopher-king

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: cheese-eating soul-stirring locale masturbator

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: 180 Public Bath Azn



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



Reply Favorite

Date: October 12th, 2024 3:45 PM
Author: Supple angry brunch personal credit line

Wtf

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



Reply Favorite

Date: October 12th, 2024 5:01 PM
Author: Aqua Ceo Philosopher-king

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: Tan multi-colored elastic band



(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: very tactful marketing idea stage

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: Bateful sex offender



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



Reply Favorite

Date: October 12th, 2024 11:44 AM
Author: cheese-eating soul-stirring locale masturbator

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: Bat shit crazy forum

180

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



Reply Favorite

Date: October 12th, 2024 11:48 AM
Author: charcoal lodge hairy legs



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



Reply Favorite

Date: October 12th, 2024 3:17 PM
Author: Demanding regret

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: curious cream gas station digit ratio

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: charcoal lodge hairy legs



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



Reply Favorite

Date: October 12th, 2024 3:34 PM
Author: curious cream gas station digit ratio

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: charcoal lodge hairy legs



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



Reply Favorite

Date: October 13th, 2024 12:04 AM
Author: curious cream gas station digit ratio

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: Glittery bossy electric furnace

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: cyan partner

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: vibrant gunner station



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



Reply Favorite

Date: November 30th, 2025 4:48 PM
Author: Bateful sex offender



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



Reply Favorite

Date: December 23rd, 2025 2:34 AM
Author: vibrant gunner station



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



Reply Favorite

Date: December 23rd, 2025 2:46 AM
Author: Odious black area roast beef



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



Reply Favorite

Date: December 23rd, 2025 6:43 AM
Author: lascivious frum persian den



(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: razzle fantasy-prone dingle berry fat ankles

yes

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



Reply Favorite

Date: October 12th, 2024 4:02 PM
Author: Supple angry brunch personal credit line

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: Ivory lay

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: drab trip private investor really tough guy

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)