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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?
Amethyst Unhinged Tank Mediation
  10/11/24
I dunno. What if she has a nice ass?
contagious boltzmann nursing home
  10/11/24
more detail plz
talented hairy legs
  10/11/24
...
contagious boltzmann nursing home
  10/11/24
It probably depends on how much you hate your bio parent and...
Razzmatazz kink-friendly idea he suggested
  10/11/24
do u know what a sister in law is?
transparent fighting generalized bond theater
  10/11/24
he's watched too much porn
Bat Shit Crazy Hyperventilating Nowag Cuckold
  10/11/24
Objection, nonresponsive
Razzmatazz kink-friendly idea he suggested
  10/11/24
...
Pale embarrassed to the bone nibblets
  12/23/25
I do but I prefer fantasizing about my non-existent step sis...
Razzmatazz kink-friendly idea he suggested
  10/11/24
Not sure if this analysis is on point. The less it's justifi...
ocher yarmulke place of business
  10/11/24
sleeping with anyone within your orbit of friends & fami...
cracking beta therapy
  10/11/24
mostly cr
Amethyst Unhinged Tank Mediation
  10/11/24
...
Hateful immigrant
  10/12/24
this is exactly why I never sleep with my wife
supple parlour
  12/23/25
depends on if your wife is dead or not
Bat Shit Crazy Hyperventilating Nowag Cuckold
  10/11/24
i believe this is colloquially known as "the biden rule...
cracking beta therapy
  10/11/24
...
exhilarant vengeful business firm
  11/30/25
only if you don't take pictures to share with us
Sooty party of the first part main people
  10/11/24
(martin brodeur)
Trip dingle berry
  10/11/24
Anyone who doesn't at least understand the temptation doesn'...
mahogany brunch bbw
  10/12/24
This. Plus they are always hugging and kissing you.
Startled vigorous coffee pot jap
  10/12/24
...
Sooty party of the first part main people
  12/23/25
Wtf
Amethyst Unhinged Tank Mediation
  10/12/24
This is my life. Constant blue balls.
mahogany brunch bbw
  10/12/24
...
talented hairy legs
  11/30/25
i'm married to the younger hotter sister, and the temptation...
...,,..;...,,..,..,...,,,;..,
  06/03/26
Is she a spicy Latina?
purple feces church building
  10/12/24
...
exhilarant vengeful business firm
  11/30/25
Youngest SiL is trim, has a 180 ass and is always kissing me...
Startled vigorous coffee pot jap
  10/12/24
180
mauve market fanboi
  10/12/24
...
Multi-colored Native Water Buffalo
  10/12/24
twist: the sil was Catherine of aragorn
copper people who are hurt
  10/12/24
If first brother was childless then this is classic Levirate...
heady gold dog poop orchestra pit
  10/12/24
...
Multi-colored Native Water Buffalo
  10/12/24
He's literally the closest replacement for the guy. I can't ...
heady gold dog poop orchestra pit
  10/12/24
...
Multi-colored Native Water Buffalo
  10/12/24
You're doing it for the purpose of having children, through ...
heady gold dog poop orchestra pit
  10/13/24
are we talking about your wife's sister or your brother's wi...
slap-happy charismatic tattoo rehab
  10/12/24
How many times do we have to go over this.
Thriller useless psychic
  10/12/24
...
Blue flickering scourge upon the earth box office
  10/12/24
...
exhilarant vengeful business firm
  11/30/25
...
Blue flickering scourge upon the earth box office
  12/23/25
...
Pale embarrassed to the bone nibblets
  12/23/25
...
hairraiser locus
  12/23/25
...
gedood persoon
  06/03/26
...
Emilio Estevez circa 2032
  06/03/26
...
Mailer Daemon
  06/03/26
...
Emilio Estevez circa 2032
  06/03/26
yes
aromatic know-it-all den codepig
  10/12/24
voice of reason as always cbtp
Amethyst Unhinged Tank Mediation
  10/12/24
not as deranged as brother-in-law
spruce swollen boiling water partner
  10/12/24
Wife’s sister or your bros wife = deranged wife&rsq...
Motley Cruel-hearted Locale
  12/23/25


Poast new message in this thread



Reply Favorite

Date: October 11th, 2024 4:34 PM
Author: Amethyst Unhinged Tank Mediation

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: contagious boltzmann nursing home

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: talented hairy legs

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: contagious boltzmann nursing home



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



Reply Favorite

Date: October 11th, 2024 4:40 PM
Author: Razzmatazz kink-friendly idea he suggested

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: transparent fighting generalized bond theater

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: Bat Shit Crazy Hyperventilating Nowag Cuckold

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: Razzmatazz kink-friendly idea he suggested

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: Pale embarrassed to the bone nibblets



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



Reply Favorite

Date: October 11th, 2024 7:50 PM
Author: Razzmatazz kink-friendly idea he suggested

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: ocher yarmulke place of business

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: cracking beta therapy

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: Amethyst Unhinged Tank Mediation

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: Hateful immigrant



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



Reply Favorite

Date: December 23rd, 2025 2:58 AM
Author: supple parlour

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: Bat Shit Crazy Hyperventilating Nowag Cuckold

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: cracking beta therapy

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: exhilarant vengeful business firm



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



Reply Favorite

Date: October 11th, 2024 4:48 PM
Author: Sooty party of the first part main people

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: Trip dingle berry

(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: mahogany brunch bbw

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: Startled vigorous coffee pot jap

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: Sooty party of the first part main people



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



Reply Favorite

Date: October 12th, 2024 3:45 PM
Author: Amethyst Unhinged Tank Mediation

Wtf

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



Reply Favorite

Date: October 12th, 2024 5:01 PM
Author: mahogany brunch bbw

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: talented hairy legs



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



Reply Favorite

Date: October 12th, 2024 11:41 AM
Author: purple feces church building

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: exhilarant vengeful business firm



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



Reply Favorite

Date: October 12th, 2024 11:44 AM
Author: Startled vigorous coffee pot jap

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: mauve market fanboi

180

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



Reply Favorite

Date: October 12th, 2024 11:48 AM
Author: Multi-colored Native Water Buffalo



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



Reply Favorite

Date: October 12th, 2024 3:17 PM
Author: copper people who are hurt

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: heady gold dog poop orchestra pit

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: Multi-colored Native Water Buffalo



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



Reply Favorite

Date: October 12th, 2024 3:34 PM
Author: heady gold dog poop orchestra pit

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: Multi-colored Native Water Buffalo



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



Reply Favorite

Date: October 13th, 2024 12:04 AM
Author: heady gold dog poop orchestra pit

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: slap-happy charismatic tattoo rehab

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: Thriller useless psychic

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: Blue flickering scourge upon the earth box office



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



Reply Favorite

Date: November 30th, 2025 4:48 PM
Author: exhilarant vengeful business firm



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



Reply Favorite

Date: December 23rd, 2025 2:34 AM
Author: Blue flickering scourge upon the earth box office



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



Reply Favorite

Date: December 23rd, 2025 2:46 AM
Author: Pale embarrassed to the bone nibblets



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



Reply Favorite

Date: December 23rd, 2025 6:43 AM
Author: hairraiser locus



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



Reply Favorite

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



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



Reply Favorite

Date: June 3rd, 2026 3:08 PM
Author: Emilio Estevez circa 2032



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



Reply Favorite

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



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



Reply Favorite

Date: June 3rd, 2026 4:24 PM
Author: Emilio Estevez circa 2032



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



Reply Favorite

Date: October 12th, 2024 11:51 AM
Author: aromatic know-it-all den codepig

yes

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



Reply Favorite

Date: October 12th, 2024 4:02 PM
Author: Amethyst Unhinged Tank Mediation

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: spruce swollen boiling water partner

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: Motley Cruel-hearted Locale

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)