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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?
sticky hospital
  10/11/24
I dunno. What if she has a nice ass?
Nighttime onyx dysfunction turdskin
  10/11/24
more detail plz
Charismatic chapel indirect expression
  10/11/24
...
Nighttime onyx dysfunction turdskin
  10/11/24
It probably depends on how much you hate your bio parent and...
histrionic lay skinny woman
  10/11/24
do u know what a sister in law is?
Umber menage
  10/11/24
he's watched too much porn
Vibrant dull filthpig double fault
  10/11/24
Objection, nonresponsive
histrionic lay skinny woman
  10/11/24
...
Diverse Orchestra Pit Toaster
  12/23/25
I do but I prefer fantasizing about my non-existent step sis...
histrionic lay skinny woman
  10/11/24
Not sure if this analysis is on point. The less it's justifi...
heady gold office
  10/11/24
sleeping with anyone within your orbit of friends & fami...
Boyish plaza
  10/11/24
mostly cr
sticky hospital
  10/11/24
...
Arousing bat-shit-crazy persian old irish cottage
  10/12/24
this is exactly why I never sleep with my wife
Alcoholic Travel Guidebook
  12/23/25
depends on if your wife is dead or not
Vibrant dull filthpig double fault
  10/11/24
i believe this is colloquially known as "the biden rule...
Boyish plaza
  10/11/24
...
titillating cowardly theater stage
  11/30/25
only if you don't take pictures to share with us
vivacious fiercely-loyal trust fund
  10/11/24
(martin brodeur)
Indigo Box Office
  10/11/24
Anyone who doesn't at least understand the temptation doesn'...
crusty jap sanctuary
  10/12/24
This. Plus they are always hugging and kissing you.
excitant set
  10/12/24
...
vivacious fiercely-loyal trust fund
  12/23/25
Wtf
sticky hospital
  10/12/24
This is my life. Constant blue balls.
crusty jap sanctuary
  10/12/24
...
Charismatic chapel indirect expression
  11/30/25
Is she a spicy Latina?
Shivering Faggot Firefighter
  10/12/24
...
titillating cowardly theater stage
  11/30/25
Youngest SiL is trim, has a 180 ass and is always kissing me...
excitant set
  10/12/24
180
Hateful Cruise Ship Nibblets
  10/12/24
...
passionate church cuckold
  10/12/24
twist: the sil was Catherine of aragorn
low-t beady-eyed den shitlib
  10/12/24
If first brother was childless then this is classic Levirate...
Crimson really tough guy mad cow disease
  10/12/24
...
passionate church cuckold
  10/12/24
He's literally the closest replacement for the guy. I can't ...
Crimson really tough guy mad cow disease
  10/12/24
...
passionate church cuckold
  10/12/24
You're doing it for the purpose of having children, through ...
Crimson really tough guy mad cow disease
  10/13/24
are we talking about your wife's sister or your brother's wi...
Ultramarine frum hall keepsake machete
  10/12/24
How many times do we have to go over this.
Flushed indian lodge
  10/12/24
...
Medicated yarmulke
  10/12/24
...
titillating cowardly theater stage
  11/30/25
...
Medicated yarmulke
  12/23/25
...
Diverse Orchestra Pit Toaster
  12/23/25
...
Cerebral Infuriating Heaven
  12/23/25
yes
Sepia queen of the night field
  10/12/24
voice of reason as always cbtp
sticky hospital
  10/12/24
not as deranged as brother-in-law
Violet supple state karate
  10/12/24
Wife’s sister or your bros wife = deranged wife&rsq...
hairraiser voyeur
  12/23/25


Poast new message in this thread



Reply Favorite

Date: October 11th, 2024 4:34 PM
Author: sticky hospital

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

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



Reply Favorite

Date: October 11th, 2024 4:34 PM
Author: Nighttime onyx dysfunction turdskin

I dunno. What if she has a nice ass?

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



Reply Favorite

Date: October 11th, 2024 4:35 PM
Author: Charismatic chapel indirect expression

more detail plz

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



Reply Favorite

Date: October 11th, 2024 4:37 PM
Author: Nighttime onyx dysfunction turdskin



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



Reply Favorite

Date: October 11th, 2024 4:40 PM
Author: histrionic lay skinny woman

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=2в#48188001)



Reply Favorite

Date: October 11th, 2024 4:41 PM
Author: Umber menage

do u know what a sister in law is?

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



Reply Favorite

Date: October 11th, 2024 4:44 PM
Author: Vibrant dull filthpig double fault

he's watched too much porn

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



Reply Favorite

Date: October 11th, 2024 7:51 PM
Author: histrionic lay skinny woman

Objection, nonresponsive

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



Reply Favorite

Date: December 23rd, 2025 2:44 AM
Author: Diverse Orchestra Pit Toaster



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



Reply Favorite

Date: October 11th, 2024 7:50 PM
Author: histrionic lay skinny woman

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=2в#48188616)



Reply Favorite

Date: October 11th, 2024 8:22 PM
Author: heady gold office

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=2в#48188745)



Reply Favorite

Date: October 11th, 2024 4:42 PM
Author: Boyish plaza

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

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



Reply Favorite

Date: October 11th, 2024 4:50 PM
Author: sticky hospital

mostly cr

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



Reply Favorite

Date: October 12th, 2024 3:21 PM
Author: Arousing bat-shit-crazy persian old irish cottage



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



Reply Favorite

Date: December 23rd, 2025 2:58 AM
Author: Alcoholic Travel Guidebook

this is exactly why I never sleep with my wife

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



Reply Favorite

Date: October 11th, 2024 4:44 PM
Author: Vibrant dull filthpig double fault

depends on if your wife is dead or not

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



Reply Favorite

Date: October 11th, 2024 4:44 PM
Author: Boyish plaza

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

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



Reply Favorite

Date: November 30th, 2025 4:48 PM
Author: titillating cowardly theater stage



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



Reply Favorite

Date: October 11th, 2024 4:48 PM
Author: vivacious fiercely-loyal trust fund

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

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



Reply Favorite

Date: October 11th, 2024 8:14 PM
Author: Indigo Box Office

(martin brodeur)

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



Reply Favorite

Date: October 12th, 2024 10:56 AM
Author: crusty jap sanctuary

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=2в#48189844)



Reply Favorite

Date: October 12th, 2024 11:38 AM
Author: excitant set

This. Plus they are always hugging and kissing you.

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



Reply Favorite

Date: December 23rd, 2025 6:52 AM
Author: vivacious fiercely-loyal trust fund



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



Reply Favorite

Date: October 12th, 2024 3:45 PM
Author: sticky hospital

Wtf

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



Reply Favorite

Date: October 12th, 2024 5:01 PM
Author: crusty jap sanctuary

This is my life. Constant blue balls.

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



Reply Favorite

Date: November 30th, 2025 4:44 PM
Author: Charismatic chapel indirect expression



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



Reply Favorite

Date: October 12th, 2024 11:41 AM
Author: Shivering Faggot Firefighter

Is she a spicy Latina?

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



Reply Favorite

Date: November 30th, 2025 4:48 PM
Author: titillating cowardly theater stage



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



Reply Favorite

Date: October 12th, 2024 11:44 AM
Author: excitant set

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=2в#48189964)



Reply Favorite

Date: October 12th, 2024 3:45 PM
Author: Hateful Cruise Ship Nibblets

180

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



Reply Favorite

Date: October 12th, 2024 11:48 AM
Author: passionate church cuckold



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



Reply Favorite

Date: October 12th, 2024 3:17 PM
Author: low-t beady-eyed den shitlib

twist: the sil was Catherine of aragorn

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



Reply Favorite

Date: October 12th, 2024 3:20 PM
Author: Crimson really tough guy mad cow disease

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=2в#48190659)



Reply Favorite

Date: October 12th, 2024 3:25 PM
Author: passionate church cuckold



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



Reply Favorite

Date: October 12th, 2024 3:34 PM
Author: Crimson really tough guy mad cow disease

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=2в#48190707)



Reply Favorite

Date: October 12th, 2024 3:38 PM
Author: passionate church cuckold



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



Reply Favorite

Date: October 13th, 2024 12:04 AM
Author: Crimson really tough guy mad cow disease

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=2в#48191875)



Reply Favorite

Date: October 12th, 2024 11:50 AM
Author: Ultramarine frum hall keepsake machete

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

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



Reply Favorite

Date: October 12th, 2024 11:52 AM
Author: Flushed indian lodge

How many times do we have to go over this.

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



Reply Favorite

Date: October 12th, 2024 4:01 PM
Author: Medicated yarmulke



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



Reply Favorite

Date: November 30th, 2025 4:48 PM
Author: titillating cowardly theater stage



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



Reply Favorite

Date: December 23rd, 2025 2:34 AM
Author: Medicated yarmulke



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



Reply Favorite

Date: December 23rd, 2025 2:46 AM
Author: Diverse Orchestra Pit Toaster



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



Reply Favorite

Date: December 23rd, 2025 6:43 AM
Author: Cerebral Infuriating Heaven



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



Reply Favorite

Date: October 12th, 2024 11:51 AM
Author: Sepia queen of the night field

yes

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



Reply Favorite

Date: October 12th, 2024 4:02 PM
Author: sticky hospital

voice of reason as always cbtp

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



Reply Favorite

Date: October 12th, 2024 11:57 AM
Author: Violet supple state karate

not as deranged as brother-in-law

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



Reply Favorite

Date: December 23rd, 2025 7:03 AM
Author: hairraiser voyeur

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=2в#49533184)