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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?
Sienna hell
  10/11/24
I dunno. What if she has a nice ass?
Stirring Silver Main People
  10/11/24
more detail plz
Heady outnumbered queen of the night
  10/11/24
...
Stirring Silver Main People
  10/11/24
It probably depends on how much you hate your bio parent and...
soul-stirring iridescent bawdyhouse fat ankles
  10/11/24
do u know what a sister in law is?
vigorous base
  10/11/24
he's watched too much porn
Confused Giraffe
  10/11/24
Objection, nonresponsive
soul-stirring iridescent bawdyhouse fat ankles
  10/11/24
...
gay lettuce
  12/23/25
I do but I prefer fantasizing about my non-existent step sis...
soul-stirring iridescent bawdyhouse fat ankles
  10/11/24
Not sure if this analysis is on point. The less it's justifi...
bespoke tan university
  10/11/24
sleeping with anyone within your orbit of friends & fami...
Vengeful wine idiot market
  10/11/24
mostly cr
Sienna hell
  10/11/24
...
Diverse lavender keepsake machete weed whacker
  10/12/24
this is exactly why I never sleep with my wife
territorial disturbing national background story
  12/23/25
depends on if your wife is dead or not
Confused Giraffe
  10/11/24
i believe this is colloquially known as "the biden rule...
Vengeful wine idiot market
  10/11/24
...
Cobalt Coiffed Cuckoldry
  11/30/25
only if you don't take pictures to share with us
Carnelian business firm gaming laptop
  10/11/24
(martin brodeur)
green locale
  10/11/24
Anyone who doesn't at least understand the temptation doesn'...
godawful sneaky criminal gunner
  10/12/24
This. Plus they are always hugging and kissing you.
curious black woman church building
  10/12/24
...
Carnelian business firm gaming laptop
  12/23/25
Wtf
Sienna hell
  10/12/24
This is my life. Constant blue balls.
godawful sneaky criminal gunner
  10/12/24
...
Heady outnumbered queen of the night
  11/30/25
Is she a spicy Latina?
Excitant vermilion pistol
  10/12/24
...
Cobalt Coiffed Cuckoldry
  11/30/25
Youngest SiL is trim, has a 180 ass and is always kissing me...
curious black woman church building
  10/12/24
180
Trip School
  10/12/24
...
pearl shrine place of business
  10/12/24
twist: the sil was Catherine of aragorn
big menage
  10/12/24
If first brother was childless then this is classic Levirate...
nighttime transparent office ratface
  10/12/24
...
pearl shrine place of business
  10/12/24
He's literally the closest replacement for the guy. I can't ...
nighttime transparent office ratface
  10/12/24
...
pearl shrine place of business
  10/12/24
You're doing it for the purpose of having children, through ...
nighttime transparent office ratface
  10/13/24
are we talking about your wife's sister or your brother's wi...
Bright shitlib
  10/12/24
How many times do we have to go over this.
indecent magical trust fund tank
  10/12/24
...
obsidian center boiling water
  10/12/24
...
Cobalt Coiffed Cuckoldry
  11/30/25
...
obsidian center boiling water
  12/23/25
...
gay lettuce
  12/23/25
...
hilarious stage water buffalo
  12/23/25
yes
Medicated stead
  10/12/24
voice of reason as always cbtp
Sienna hell
  10/12/24
not as deranged as brother-in-law
bipolar resort karate
  10/12/24
Wife’s sister or your bros wife = deranged wife&rsq...
Deep hyperactive point
  12/23/25


Poast new message in this thread



Reply Favorite

Date: October 11th, 2024 4:34 PM
Author: Sienna hell

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: Stirring Silver Main People

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: Heady outnumbered queen of the night

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: Stirring Silver Main People



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



Reply Favorite

Date: October 11th, 2024 4:40 PM
Author: soul-stirring iridescent bawdyhouse fat ankles

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: vigorous base

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: Confused Giraffe

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: soul-stirring iridescent bawdyhouse fat ankles

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: gay lettuce



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



Reply Favorite

Date: October 11th, 2024 7:50 PM
Author: soul-stirring iridescent bawdyhouse fat ankles

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: bespoke tan university

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: Vengeful wine idiot market

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: Sienna hell

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: Diverse lavender keepsake machete weed whacker



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



Reply Favorite

Date: December 23rd, 2025 2:58 AM
Author: territorial disturbing national background story

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: Confused Giraffe

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: Vengeful wine idiot market

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: Cobalt Coiffed Cuckoldry



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



Reply Favorite

Date: October 11th, 2024 4:48 PM
Author: Carnelian business firm 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: green locale

(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: godawful sneaky criminal gunner

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: curious black woman 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: Carnelian business firm 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: Sienna hell

Wtf

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



Reply Favorite

Date: October 12th, 2024 5:01 PM
Author: godawful sneaky criminal gunner

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: Heady outnumbered queen of the night



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



Reply Favorite

Date: October 12th, 2024 11:41 AM
Author: Excitant vermilion pistol

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: Cobalt Coiffed Cuckoldry



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



Reply Favorite

Date: October 12th, 2024 11:44 AM
Author: curious black woman 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: Trip School

180

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



Reply Favorite

Date: October 12th, 2024 11:48 AM
Author: pearl shrine place of business



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



Reply Favorite

Date: October 12th, 2024 3:17 PM
Author: big menage

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: nighttime transparent office ratface

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: pearl shrine place of business



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



Reply Favorite

Date: October 12th, 2024 3:34 PM
Author: nighttime transparent office ratface

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: pearl shrine place of business



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



Reply Favorite

Date: October 13th, 2024 12:04 AM
Author: nighttime transparent office ratface

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: Bright shitlib

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: indecent magical trust fund tank

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: obsidian center boiling water



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



Reply Favorite

Date: November 30th, 2025 4:48 PM
Author: Cobalt Coiffed Cuckoldry



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



Reply Favorite

Date: December 23rd, 2025 2:34 AM
Author: obsidian center boiling water



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



Reply Favorite

Date: December 23rd, 2025 2:46 AM
Author: gay lettuce



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



Reply Favorite

Date: December 23rd, 2025 6:43 AM
Author: hilarious stage water buffalo



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



Reply Favorite

Date: October 12th, 2024 11:51 AM
Author: Medicated stead

yes

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



Reply Favorite

Date: October 12th, 2024 4:02 PM
Author: Sienna hell

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: bipolar resort karate

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: Deep hyperactive point

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)