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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?
Jet-lagged adventurous library
  10/11/24
I dunno. What if she has a nice ass?
racy smoky brunch
  10/11/24
more detail plz
Charismatic Henna Heaven Hunting Ground
  10/11/24
...
racy smoky brunch
  10/11/24
It probably depends on how much you hate your bio parent and...
mauve masturbator old irish cottage
  10/11/24
do u know what a sister in law is?
Spruce forum coffee pot
  10/11/24
he's watched too much porn
Frozen regret
  10/11/24
Objection, nonresponsive
mauve masturbator old irish cottage
  10/11/24
...
Aromatic know-it-all orchestra pit
  12/23/25
I do but I prefer fantasizing about my non-existent step sis...
mauve masturbator old irish cottage
  10/11/24
Not sure if this analysis is on point. The less it's justifi...
Heady cuck
  10/11/24
sleeping with anyone within your orbit of friends & fami...
Bateful cuckoldry
  10/11/24
mostly cr
Jet-lagged adventurous library
  10/11/24
...
slimy field
  10/12/24
this is exactly why I never sleep with my wife
Angry Out-of-control Dilemma
  12/23/25
depends on if your wife is dead or not
Frozen regret
  10/11/24
i believe this is colloquially known as "the biden rule...
Bateful cuckoldry
  10/11/24
...
aquamarine passionate feces toilet seat
  11/30/25
only if you don't take pictures to share with us
Sapphire point philosopher-king
  10/11/24
(martin brodeur)
odious kitty cat
  10/11/24
Anyone who doesn't at least understand the temptation doesn'...
fluffy stage
  10/12/24
This. Plus they are always hugging and kissing you.
Shimmering Affirmative Action Legend
  10/12/24
...
Sapphire point philosopher-king
  12/23/25
Wtf
Jet-lagged adventurous library
  10/12/24
This is my life. Constant blue balls.
fluffy stage
  10/12/24
...
Charismatic Henna Heaven Hunting Ground
  11/30/25
Is she a spicy Latina?
startled set jap
  10/12/24
...
aquamarine passionate feces toilet seat
  11/30/25
Youngest SiL is trim, has a 180 ass and is always kissing me...
Shimmering Affirmative Action Legend
  10/12/24
180
Autistic green ratface
  10/12/24
...
Mint hyperactive boltzmann
  10/12/24
twist: the sil was Catherine of aragorn
Rusted Hairy Legs
  10/12/24
If first brother was childless then this is classic Levirate...
Razzle-dazzle School
  10/12/24
...
Mint hyperactive boltzmann
  10/12/24
He's literally the closest replacement for the guy. I can't ...
Razzle-dazzle School
  10/12/24
...
Mint hyperactive boltzmann
  10/12/24
You're doing it for the purpose of having children, through ...
Razzle-dazzle School
  10/13/24
are we talking about your wife's sister or your brother's wi...
Useless chapel
  10/12/24
How many times do we have to go over this.
fantasy-prone internal respiration headpube
  10/12/24
...
Bisexual aphrodisiac mexican bawdyhouse
  10/12/24
...
aquamarine passionate feces toilet seat
  11/30/25
...
Bisexual aphrodisiac mexican bawdyhouse
  12/23/25
...
Aromatic know-it-all orchestra pit
  12/23/25
...
floppy institution
  12/23/25
yes
vengeful scarlet pit
  10/12/24
voice of reason as always cbtp
Jet-lagged adventurous library
  10/12/24
not as deranged as brother-in-law
lake bbw water buffalo
  10/12/24
Wife’s sister or your bros wife = deranged wife&rsq...
dashing step-uncle's house
  12/23/25


Poast new message in this thread



Reply Favorite

Date: October 11th, 2024 4:34 PM
Author: Jet-lagged adventurous library

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: racy smoky brunch

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: Charismatic Henna Heaven Hunting Ground

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: racy smoky brunch



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



Reply Favorite

Date: October 11th, 2024 4:40 PM
Author: mauve masturbator old irish cottage

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: Spruce forum coffee pot

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: Frozen regret

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: mauve masturbator old irish cottage

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: Aromatic know-it-all orchestra pit



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



Reply Favorite

Date: October 11th, 2024 7:50 PM
Author: mauve masturbator old irish cottage

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: Heady cuck

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: Bateful cuckoldry

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: Jet-lagged adventurous library

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: slimy field



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



Reply Favorite

Date: December 23rd, 2025 2:58 AM
Author: Angry Out-of-control Dilemma

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: Frozen regret

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: Bateful cuckoldry

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: aquamarine passionate feces toilet seat



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



Reply Favorite

Date: October 11th, 2024 4:48 PM
Author: Sapphire point philosopher-king

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: odious kitty cat

(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: fluffy stage

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: Shimmering Affirmative Action Legend

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: Sapphire point philosopher-king



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



Reply Favorite

Date: October 12th, 2024 3:45 PM
Author: Jet-lagged adventurous library

Wtf

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



Reply Favorite

Date: October 12th, 2024 5:01 PM
Author: fluffy stage

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: Charismatic Henna Heaven Hunting Ground



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



Reply Favorite

Date: October 12th, 2024 11:41 AM
Author: startled set jap

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: aquamarine passionate feces toilet seat



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



Reply Favorite

Date: October 12th, 2024 11:44 AM
Author: Shimmering Affirmative Action Legend

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: Autistic green ratface

180

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



Reply Favorite

Date: October 12th, 2024 11:48 AM
Author: Mint hyperactive boltzmann



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



Reply Favorite

Date: October 12th, 2024 3:17 PM
Author: Rusted Hairy Legs

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: Razzle-dazzle School

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: Mint hyperactive boltzmann



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



Reply Favorite

Date: October 12th, 2024 3:34 PM
Author: Razzle-dazzle School

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: Mint hyperactive boltzmann



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



Reply Favorite

Date: October 13th, 2024 12:04 AM
Author: Razzle-dazzle School

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: Useless chapel

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: fantasy-prone internal respiration headpube

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: Bisexual aphrodisiac mexican bawdyhouse



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



Reply Favorite

Date: November 30th, 2025 4:48 PM
Author: aquamarine passionate feces toilet seat



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



Reply Favorite

Date: December 23rd, 2025 2:34 AM
Author: Bisexual aphrodisiac mexican bawdyhouse



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



Reply Favorite

Date: December 23rd, 2025 2:46 AM
Author: Aromatic know-it-all orchestra pit



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



Reply Favorite

Date: December 23rd, 2025 6:43 AM
Author: floppy institution



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



Reply Favorite

Date: October 12th, 2024 11:51 AM
Author: vengeful scarlet pit

yes

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



Reply Favorite

Date: October 12th, 2024 4:02 PM
Author: Jet-lagged adventurous library

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: lake bbw water buffalo

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: dashing step-uncle's house

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)