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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?
purple school cafeteria codepig
  10/11/24
I dunno. What if she has a nice ass?
Smoky doctorate
  10/11/24
more detail plz
Massive temple pocket flask
  10/11/24
...
Smoky doctorate
  10/11/24
It probably depends on how much you hate your bio parent and...
Topaz bateful circlehead shitlib
  10/11/24
do u know what a sister in law is?
Vibrant Chad Multi-billionaire
  10/11/24
he's watched too much porn
talking sapphire preventive strike
  10/11/24
Objection, nonresponsive
Topaz bateful circlehead shitlib
  10/11/24
...
Swashbuckling Forum Windowlicker
  12/23/25
I do but I prefer fantasizing about my non-existent step sis...
Topaz bateful circlehead shitlib
  10/11/24
Not sure if this analysis is on point. The less it's justifi...
Garnet Trip Public Bath
  10/11/24
sleeping with anyone within your orbit of friends & fami...
Stirring newt
  10/11/24
mostly cr
purple school cafeteria codepig
  10/11/24
...
Amethyst Area Cumskin
  10/12/24
this is exactly why I never sleep with my wife
Buff digit ratio
  12/23/25
depends on if your wife is dead or not
talking sapphire preventive strike
  10/11/24
i believe this is colloquially known as "the biden rule...
Stirring newt
  10/11/24
...
Silver nibblets
  11/30/25
only if you don't take pictures to share with us
Walnut misunderstood senate generalized bond
  10/11/24
(martin brodeur)
blathering wild main people stain
  10/11/24
Anyone who doesn't at least understand the temptation doesn'...
unhinged histrionic menage
  10/12/24
This. Plus they are always hugging and kissing you.
Bisexual son of senegal orchestra pit
  10/12/24
...
Walnut misunderstood senate generalized bond
  12/23/25
Wtf
purple school cafeteria codepig
  10/12/24
This is my life. Constant blue balls.
unhinged histrionic menage
  10/12/24
...
Massive temple pocket flask
  11/30/25
i'm married to the younger hotter sister, and the temptation...
comical aquamarine dingle berry death wish
  06/03/26
Is she a spicy Latina?
Dashing dark parlour mother
  10/12/24
...
Silver nibblets
  11/30/25
Youngest SiL is trim, has a 180 ass and is always kissing me...
Bisexual son of senegal orchestra pit
  10/12/24
180
Milky Big-titted Giraffe
  10/12/24
...
Abnormal base dopamine
  10/12/24
twist: the sil was Catherine of aragorn
Marvelous business firm
  10/12/24
If first brother was childless then this is classic Levirate...
curious regret deer antler
  10/12/24
...
Abnormal base dopamine
  10/12/24
He's literally the closest replacement for the guy. I can't ...
curious regret deer antler
  10/12/24
...
Abnormal base dopamine
  10/12/24
You're doing it for the purpose of having children, through ...
curious regret deer antler
  10/13/24
are we talking about your wife's sister or your brother's wi...
Razzle pistol pervert
  10/12/24
How many times do we have to go over this.
shivering elite site legal warrant
  10/12/24
...
Charismatic roommate
  10/12/24
...
Silver nibblets
  11/30/25
...
Charismatic roommate
  12/23/25
...
Swashbuckling Forum Windowlicker
  12/23/25
...
Pink dog poop knife
  12/23/25
...
Charismatic roommate
  06/03/26
...
flirting yarmulke goyim
  06/03/26
...
rusted trailer park
  06/03/26
...
flirting yarmulke goyim
  06/03/26
yes
passionate chartreuse double fault
  10/12/24
voice of reason as always cbtp
purple school cafeteria codepig
  10/12/24
not as deranged as brother-in-law
Adventurous crimson hall faggot firefighter
  10/12/24
Wife’s sister or your bros wife = deranged wife&rsq...
Cracking Internet-worthy Nowag Piazza
  12/23/25


Poast new message in this thread



Reply Favorite

Date: October 11th, 2024 4:34 PM
Author: purple school cafeteria codepig

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: Smoky doctorate

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: Massive temple pocket flask

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: Smoky doctorate



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



Reply Favorite

Date: October 11th, 2024 4:40 PM
Author: Topaz bateful circlehead shitlib

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: Vibrant Chad Multi-billionaire

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: talking sapphire preventive strike

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: Topaz bateful circlehead shitlib

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: Swashbuckling Forum Windowlicker



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



Reply Favorite

Date: October 11th, 2024 7:50 PM
Author: Topaz bateful circlehead shitlib

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: Garnet Trip Public Bath

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: Stirring newt

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: purple school cafeteria codepig

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: Amethyst Area Cumskin



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



Reply Favorite

Date: December 23rd, 2025 2:58 AM
Author: Buff digit ratio

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: talking sapphire preventive strike

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: Stirring newt

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: Silver nibblets



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



Reply Favorite

Date: October 11th, 2024 4:48 PM
Author: Walnut misunderstood senate generalized bond

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: blathering wild main people stain

(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: unhinged histrionic menage

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: Bisexual son of senegal orchestra pit

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: Walnut misunderstood senate generalized bond



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



Reply Favorite

Date: October 12th, 2024 3:45 PM
Author: purple school cafeteria codepig

Wtf

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



Reply Favorite

Date: October 12th, 2024 5:01 PM
Author: unhinged histrionic menage

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: Massive temple pocket flask



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



Reply Favorite

Date: June 3rd, 2026 4:32 PM
Author: comical aquamarine dingle berry death wish

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: Dashing dark parlour mother

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: Silver nibblets



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



Reply Favorite

Date: October 12th, 2024 11:44 AM
Author: Bisexual son of senegal orchestra pit

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: Milky Big-titted Giraffe

180

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



Reply Favorite

Date: October 12th, 2024 11:48 AM
Author: Abnormal base dopamine



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



Reply Favorite

Date: October 12th, 2024 3:17 PM
Author: Marvelous business firm

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 regret deer antler

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: Abnormal base dopamine



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



Reply Favorite

Date: October 12th, 2024 3:34 PM
Author: curious regret deer antler

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: Abnormal base dopamine



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



Reply Favorite

Date: October 13th, 2024 12:04 AM
Author: curious regret deer antler

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: Razzle pistol pervert

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: shivering elite site legal warrant

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: Charismatic roommate



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



Reply Favorite

Date: November 30th, 2025 4:48 PM
Author: Silver nibblets



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



Reply Favorite

Date: December 23rd, 2025 2:34 AM
Author: Charismatic roommate



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



Reply Favorite

Date: December 23rd, 2025 2:46 AM
Author: Swashbuckling Forum Windowlicker



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



Reply Favorite

Date: December 23rd, 2025 6:43 AM
Author: Pink dog poop knife



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



Reply Favorite

Date: June 3rd, 2026 3:03 PM
Author: Charismatic roommate



(http://www.autoadmit.com/thread.php?thread_id=5610171&forum_id=2#49913228)



Reply Favorite

Date: June 3rd, 2026 3:08 PM
Author: flirting yarmulke goyim



(http://www.autoadmit.com/thread.php?thread_id=5610171&forum_id=2#49913235)



Reply Favorite

Date: June 3rd, 2026 3:20 PM
Author: rusted trailer park



(http://www.autoadmit.com/thread.php?thread_id=5610171&forum_id=2#49913261)



Reply Favorite

Date: June 3rd, 2026 4:24 PM
Author: flirting yarmulke goyim



(http://www.autoadmit.com/thread.php?thread_id=5610171&forum_id=2#49913390)



Reply Favorite

Date: October 12th, 2024 11:51 AM
Author: passionate chartreuse double fault

yes

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



Reply Favorite

Date: October 12th, 2024 4:02 PM
Author: purple school cafeteria codepig

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: Adventurous crimson hall faggot firefighter

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: Cracking Internet-worthy Nowag Piazza

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)