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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?
shaky narrow-minded tanning salon roommate
  10/11/24
I dunno. What if she has a nice ass?
adventurous scourge upon the earth center
  10/11/24
more detail plz
opaque nighttime windowlicker
  10/11/24
...
adventurous scourge upon the earth center
  10/11/24
It probably depends on how much you hate your bio parent and...
Aphrodisiac Unholy Den Prole
  10/11/24
do u know what a sister in law is?
duck-like black woman lodge
  10/11/24
he's watched too much porn
tan theater filthpig
  10/11/24
Objection, nonresponsive
Aphrodisiac Unholy Den Prole
  10/11/24
...
Amber magical locus codepig
  12/23/25
I do but I prefer fantasizing about my non-existent step sis...
Aphrodisiac Unholy Den Prole
  10/11/24
Not sure if this analysis is on point. The less it's justifi...
Contagious Site
  10/11/24
sleeping with anyone within your orbit of friends & fami...
heady costumed kitty cat set
  10/11/24
mostly cr
shaky narrow-minded tanning salon roommate
  10/11/24
...
fragrant station pisswyrm
  10/12/24
this is exactly why I never sleep with my wife
flushed mewling death wish resort
  12/23/25
depends on if your wife is dead or not
tan theater filthpig
  10/11/24
i believe this is colloquially known as "the biden rule...
heady costumed kitty cat set
  10/11/24
...
Ungodly khaki knife
  11/30/25
only if you don't take pictures to share with us
Bistre whorehouse
  10/11/24
(martin brodeur)
Dun stage
  10/11/24
Anyone who doesn't at least understand the temptation doesn'...
Autistic Turdskin Immigrant
  10/12/24
This. Plus they are always hugging and kissing you.
peach flatulent market
  10/12/24
...
Bistre whorehouse
  12/23/25
Wtf
shaky narrow-minded tanning salon roommate
  10/12/24
This is my life. Constant blue balls.
Autistic Turdskin Immigrant
  10/12/24
...
opaque nighttime windowlicker
  11/30/25
i'm married to the younger hotter sister, and the temptation...
...,,..;...,,..,..,...,,,;..,
  06/03/26
Is she a spicy Latina?
stirring gay incel mood
  10/12/24
...
Ungodly khaki knife
  11/30/25
Youngest SiL is trim, has a 180 ass and is always kissing me...
peach flatulent market
  10/12/24
180
well-lubricated insecure electric furnace rigpig
  10/12/24
...
bearded public bath
  10/12/24
twist: the sil was Catherine of aragorn
black lay voyeur
  10/12/24
If first brother was childless then this is classic Levirate...
Yellow Theater Stage
  10/12/24
...
bearded public bath
  10/12/24
He's literally the closest replacement for the guy. I can't ...
Yellow Theater Stage
  10/12/24
...
bearded public bath
  10/12/24
You're doing it for the purpose of having children, through ...
Yellow Theater Stage
  10/13/24
are we talking about your wife's sister or your brother's wi...
gold stag film
  10/12/24
How many times do we have to go over this.
Curious Office Trump Supporter
  10/12/24
...
Lilac Vigorous Abode Boiling Water
  10/12/24
...
Ungodly khaki knife
  11/30/25
...
Lilac Vigorous Abode Boiling Water
  12/23/25
...
Amber magical locus codepig
  12/23/25
...
titillating kitchen
  12/23/25
...
gedood persoon
  06/03/26
...
Bellevue therapy dog tp
  06/03/26
...
Mailer Daemon
  06/03/26
...
Bellevue therapy dog tp
  06/03/26
yes
flesh corn cake stock car
  10/12/24
voice of reason as always cbtp
shaky narrow-minded tanning salon roommate
  10/12/24
not as deranged as brother-in-law
mauve pea-brained national
  10/12/24
Wife’s sister or your bros wife = deranged wife&rsq...
Bat shit crazy twisted property legal warrant
  12/23/25


Poast new message in this thread



Reply Favorite

Date: October 11th, 2024 4:34 PM
Author: shaky narrow-minded tanning salon roommate

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: adventurous scourge upon the earth center

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: opaque nighttime windowlicker

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: adventurous scourge upon the earth center



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



Reply Favorite

Date: October 11th, 2024 4:40 PM
Author: Aphrodisiac Unholy Den Prole

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: duck-like black woman lodge

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: tan theater filthpig

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: Aphrodisiac Unholy Den Prole

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: Amber magical locus codepig



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



Reply Favorite

Date: October 11th, 2024 7:50 PM
Author: Aphrodisiac Unholy Den Prole

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: Contagious Site

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: heady costumed kitty cat set

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: shaky narrow-minded tanning salon roommate

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: fragrant station pisswyrm



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



Reply Favorite

Date: December 23rd, 2025 2:58 AM
Author: flushed mewling death wish resort

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: tan theater filthpig

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: heady costumed kitty cat set

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: Ungodly khaki knife



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



Reply Favorite

Date: October 11th, 2024 4:48 PM
Author: Bistre whorehouse

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: Dun stage

(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: Autistic Turdskin Immigrant

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: peach flatulent market

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: Bistre whorehouse



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



Reply Favorite

Date: October 12th, 2024 3:45 PM
Author: shaky narrow-minded tanning salon roommate

Wtf

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



Reply Favorite

Date: October 12th, 2024 5:01 PM
Author: Autistic Turdskin Immigrant

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: opaque nighttime windowlicker



(http://www.autoadmit.com/thread.php?thread_id=5610171&forum_id=2в#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=2в#49913429)



Reply Favorite

Date: October 12th, 2024 11:41 AM
Author: stirring gay incel mood

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: Ungodly khaki knife



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



Reply Favorite

Date: October 12th, 2024 11:44 AM
Author: peach flatulent market

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: well-lubricated insecure electric furnace rigpig

180

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



Reply Favorite

Date: October 12th, 2024 11:48 AM
Author: bearded public bath



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



Reply Favorite

Date: October 12th, 2024 3:17 PM
Author: black lay voyeur

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: Yellow Theater Stage

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: bearded public bath



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



Reply Favorite

Date: October 12th, 2024 3:34 PM
Author: Yellow Theater Stage

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: bearded public bath



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



Reply Favorite

Date: October 13th, 2024 12:04 AM
Author: Yellow Theater Stage

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: gold stag film

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: Curious Office Trump Supporter

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: Lilac Vigorous Abode Boiling Water



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



Reply Favorite

Date: November 30th, 2025 4:48 PM
Author: Ungodly khaki knife



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



Reply Favorite

Date: December 23rd, 2025 2:34 AM
Author: Lilac Vigorous Abode Boiling Water



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



Reply Favorite

Date: December 23rd, 2025 2:46 AM
Author: Amber magical locus codepig



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



Reply Favorite

Date: December 23rd, 2025 6:43 AM
Author: titillating kitchen



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



Reply Favorite

Date: June 3rd, 2026 3:03 PM
Author: gedood persoon



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



Reply Favorite

Date: June 3rd, 2026 3:08 PM
Author: Bellevue therapy dog tp



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



Reply Favorite

Date: June 3rd, 2026 3:20 PM
Author: Mailer Daemon



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



Reply Favorite

Date: June 3rd, 2026 4:24 PM
Author: Bellevue therapy dog tp



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



Reply Favorite

Date: October 12th, 2024 11:51 AM
Author: flesh corn cake stock car

yes

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



Reply Favorite

Date: October 12th, 2024 4:02 PM
Author: shaky narrow-minded tanning salon roommate

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: mauve pea-brained national

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: Bat shit crazy twisted property legal warrant

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)