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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?
Appetizing misunderstood kitchen selfie
  10/11/24
I dunno. What if she has a nice ass?
Orchid mental disorder range
  10/11/24
more detail plz
translucent irate base international law enforcement agency
  10/11/24
...
Orchid mental disorder range
  10/11/24
It probably depends on how much you hate your bio parent and...
Mildly autistic mood windowlicker
  10/11/24
do u know what a sister in law is?
Scarlet Public Bath Knife
  10/11/24
he's watched too much porn
Flickering pocket flask dysfunction
  10/11/24
Objection, nonresponsive
Mildly autistic mood windowlicker
  10/11/24
...
Dun aphrodisiac brunch
  12/23/25
I do but I prefer fantasizing about my non-existent step sis...
Mildly autistic mood windowlicker
  10/11/24
Not sure if this analysis is on point. The less it's justifi...
Balding rehab pervert
  10/11/24
sleeping with anyone within your orbit of friends & fami...
onyx azn
  10/11/24
mostly cr
Appetizing misunderstood kitchen selfie
  10/11/24
...
Provocative nudist doctorate
  10/12/24
this is exactly why I never sleep with my wife
self-absorbed vibrant theater prole
  12/23/25
depends on if your wife is dead or not
Flickering pocket flask dysfunction
  10/11/24
i believe this is colloquially known as "the biden rule...
onyx azn
  10/11/24
...
talented green resort
  11/30/25
only if you don't take pictures to share with us
know-it-all stage gaming laptop
  10/11/24
(martin brodeur)
Chrome buck-toothed potus
  10/11/24
Anyone who doesn't at least understand the temptation doesn'...
Soggy opaque box office
  10/12/24
This. Plus they are always hugging and kissing you.
exciting mint church building
  10/12/24
...
know-it-all stage gaming laptop
  12/23/25
Wtf
Appetizing misunderstood kitchen selfie
  10/12/24
This is my life. Constant blue balls.
Soggy opaque box office
  10/12/24
...
translucent irate base international law enforcement agency
  11/30/25
i'm married to the younger hotter sister, and the temptation...
...,,..;...,,..,..,...,,,;..,
  06/03/26
Is she a spicy Latina?
motley faggotry
  10/12/24
...
talented green resort
  11/30/25
Youngest SiL is trim, has a 180 ass and is always kissing me...
exciting mint church building
  10/12/24
180
Beady-eyed dilemma friendly grandma
  10/12/24
...
Arrogant vigorous stage gunner
  10/12/24
twist: the sil was Catherine of aragorn
bossy comical persian
  10/12/24
If first brother was childless then this is classic Levirate...
fuchsia water buffalo
  10/12/24
...
Arrogant vigorous stage gunner
  10/12/24
He's literally the closest replacement for the guy. I can't ...
fuchsia water buffalo
  10/12/24
...
Arrogant vigorous stage gunner
  10/12/24
You're doing it for the purpose of having children, through ...
fuchsia water buffalo
  10/13/24
are we talking about your wife's sister or your brother's wi...
magical pozpig address
  10/12/24
How many times do we have to go over this.
carnelian hissy fit
  10/12/24
...
learning disabled very tactful indian lodge
  10/12/24
...
talented green resort
  11/30/25
...
learning disabled very tactful indian lodge
  12/23/25
...
Dun aphrodisiac brunch
  12/23/25
...
useless slate preventive strike hospital
  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
Olive Ratface
  10/12/24
voice of reason as always cbtp
Appetizing misunderstood kitchen selfie
  10/12/24
not as deranged as brother-in-law
sickened hairless private investor market
  10/12/24
Wife’s sister or your bros wife = deranged wife&rsq...
Sooty sanctuary degenerate
  12/23/25


Poast new message in this thread



Reply Favorite

Date: October 11th, 2024 4:34 PM
Author: Appetizing misunderstood kitchen selfie

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: Orchid mental disorder range

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: translucent irate base international law enforcement agency

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: Orchid mental disorder range



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



Reply Favorite

Date: October 11th, 2024 4:40 PM
Author: Mildly autistic mood windowlicker

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: Scarlet Public Bath Knife

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: Flickering pocket flask dysfunction

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: Mildly autistic mood windowlicker

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: Dun aphrodisiac brunch



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



Reply Favorite

Date: October 11th, 2024 7:50 PM
Author: Mildly autistic mood windowlicker

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: Balding rehab pervert

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: onyx azn

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: Appetizing misunderstood kitchen selfie

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: Provocative nudist doctorate



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



Reply Favorite

Date: December 23rd, 2025 2:58 AM
Author: self-absorbed vibrant theater prole

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: Flickering pocket flask dysfunction

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: onyx azn

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: talented green resort



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



Reply Favorite

Date: October 11th, 2024 4:48 PM
Author: know-it-all stage gaming laptop

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: Chrome buck-toothed potus

(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: Soggy opaque box office

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: exciting mint church building

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: know-it-all stage gaming laptop



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



Reply Favorite

Date: October 12th, 2024 3:45 PM
Author: Appetizing misunderstood kitchen selfie

Wtf

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



Reply Favorite

Date: October 12th, 2024 5:01 PM
Author: Soggy opaque box office

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: translucent irate base international law enforcement agency



(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: motley faggotry

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: talented green resort



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



Reply Favorite

Date: October 12th, 2024 11:44 AM
Author: exciting mint church building

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: Beady-eyed dilemma friendly grandma

180

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



Reply Favorite

Date: October 12th, 2024 11:48 AM
Author: Arrogant vigorous stage gunner



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



Reply Favorite

Date: October 12th, 2024 3:17 PM
Author: bossy comical persian

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: fuchsia water buffalo

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: Arrogant vigorous stage gunner



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



Reply Favorite

Date: October 12th, 2024 3:34 PM
Author: fuchsia water buffalo

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: Arrogant vigorous stage gunner



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



Reply Favorite

Date: October 13th, 2024 12:04 AM
Author: fuchsia water buffalo

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: magical pozpig address

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: carnelian hissy fit

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: learning disabled very tactful indian lodge



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



Reply Favorite

Date: November 30th, 2025 4:48 PM
Author: talented green resort



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



Reply Favorite

Date: December 23rd, 2025 2:34 AM
Author: learning disabled very tactful indian lodge



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



Reply Favorite

Date: December 23rd, 2025 2:46 AM
Author: Dun aphrodisiac brunch



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



Reply Favorite

Date: December 23rd, 2025 6:43 AM
Author: useless slate preventive strike hospital



(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: Olive Ratface

yes

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



Reply Favorite

Date: October 12th, 2024 4:02 PM
Author: Appetizing misunderstood kitchen selfie

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: sickened hairless private investor market

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: Sooty sanctuary degenerate

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)