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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?
bonkers resort
  10/11/24
I dunno. What if she has a nice ass?
Infuriating patrolman
  10/11/24
more detail plz
Smoky ticket booth gaping
  10/11/24
...
Infuriating patrolman
  10/11/24
It probably depends on how much you hate your bio parent and...
Opaque dysfunction
  10/11/24
do u know what a sister in law is?
henna preventive strike station
  10/11/24
he's watched too much porn
Glassy brunch
  10/11/24
Objection, nonresponsive
Opaque dysfunction
  10/11/24
...
Bossy stimulating lodge
  12/23/25
I do but I prefer fantasizing about my non-existent step sis...
Opaque dysfunction
  10/11/24
Not sure if this analysis is on point. The less it's justifi...
stirring parlor sneaky criminal
  10/11/24
sleeping with anyone within your orbit of friends & fami...
pearl diverse weed whacker base
  10/11/24
mostly cr
bonkers resort
  10/11/24
...
gold son of senegal water buffalo
  10/12/24
this is exactly why I never sleep with my wife
Effete pervert
  12/23/25
depends on if your wife is dead or not
Glassy brunch
  10/11/24
i believe this is colloquially known as "the biden rule...
pearl diverse weed whacker base
  10/11/24
...
Deep Hissy Fit
  11/30/25
only if you don't take pictures to share with us
Provocative Stage Main People
  10/11/24
(martin brodeur)
at-the-ready legal warrant
  10/11/24
Anyone who doesn't at least understand the temptation doesn'...
French Aromatic Place Of Business Space
  10/12/24
This. Plus they are always hugging and kissing you.
scarlet buck-toothed hospital marketing idea
  10/12/24
...
Provocative Stage Main People
  12/23/25
Wtf
bonkers resort
  10/12/24
This is my life. Constant blue balls.
French Aromatic Place Of Business Space
  10/12/24
...
Smoky ticket booth gaping
  11/30/25
i'm married to the younger hotter sister, and the temptation...
...,,..;...,,..,..,...,,,;..,
  06/03/26
Is she a spicy Latina?
floppy address
  10/12/24
...
Deep Hissy Fit
  11/30/25
Youngest SiL is trim, has a 180 ass and is always kissing me...
scarlet buck-toothed hospital marketing idea
  10/12/24
180
Wonderful kink-friendly cruise ship fat ankles
  10/12/24
...
Honey-headed cocky electric furnace home
  10/12/24
twist: the sil was Catherine of aragorn
White church
  10/12/24
If first brother was childless then this is classic Levirate...
Orange Kitty
  10/12/24
...
Honey-headed cocky electric furnace home
  10/12/24
He's literally the closest replacement for the guy. I can't ...
Orange Kitty
  10/12/24
...
Honey-headed cocky electric furnace home
  10/12/24
You're doing it for the purpose of having children, through ...
Orange Kitty
  10/13/24
are we talking about your wife's sister or your brother's wi...
Mind-boggling Cuckold Hunting Ground
  10/12/24
How many times do we have to go over this.
supple wine love of her life
  10/12/24
...
pontificating azn
  10/12/24
...
Deep Hissy Fit
  11/30/25
...
pontificating azn
  12/23/25
...
Bossy stimulating lodge
  12/23/25
...
Exhilarant Hall Cuckoldry
  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
well-lubricated chestnut genital piercing idiot
  10/12/24
voice of reason as always cbtp
bonkers resort
  10/12/24
not as deranged as brother-in-law
Rough-skinned senate
  10/12/24
Wife’s sister or your bros wife = deranged wife&rsq...
bat-shit-crazy milky background story
  12/23/25


Poast new message in this thread



Reply Favorite

Date: October 11th, 2024 4:34 PM
Author: bonkers resort

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: Infuriating patrolman

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: Smoky ticket booth gaping

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: Infuriating patrolman



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



Reply Favorite

Date: October 11th, 2024 4:40 PM
Author: Opaque dysfunction

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: henna preventive strike station

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: Glassy brunch

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: Opaque dysfunction

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: Bossy stimulating lodge



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



Reply Favorite

Date: October 11th, 2024 7:50 PM
Author: Opaque dysfunction

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: stirring parlor sneaky criminal

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: pearl diverse weed whacker base

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: bonkers resort

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: gold son of senegal water buffalo



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



Reply Favorite

Date: December 23rd, 2025 2:58 AM
Author: Effete pervert

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: Glassy brunch

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: pearl diverse weed whacker base

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: Deep Hissy Fit



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



Reply Favorite

Date: October 11th, 2024 4:48 PM
Author: Provocative Stage 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: at-the-ready legal warrant

(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: French Aromatic Place Of Business Space

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: scarlet buck-toothed hospital marketing idea

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: Provocative Stage 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: bonkers resort

Wtf

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



Reply Favorite

Date: October 12th, 2024 5:01 PM
Author: French Aromatic Place Of Business Space

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: Smoky ticket booth gaping



(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: floppy address

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: Deep Hissy Fit



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



Reply Favorite

Date: October 12th, 2024 11:44 AM
Author: scarlet buck-toothed hospital marketing idea

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: Wonderful kink-friendly cruise ship fat ankles

180

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



Reply Favorite

Date: October 12th, 2024 11:48 AM
Author: Honey-headed cocky electric furnace home



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



Reply Favorite

Date: October 12th, 2024 3:17 PM
Author: White church

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: Orange Kitty

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: Honey-headed cocky electric furnace home



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



Reply Favorite

Date: October 12th, 2024 3:34 PM
Author: Orange Kitty

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: Honey-headed cocky electric furnace home



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



Reply Favorite

Date: October 13th, 2024 12:04 AM
Author: Orange Kitty

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: Mind-boggling Cuckold Hunting Ground

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: supple wine love of her life

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: pontificating azn



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



Reply Favorite

Date: November 30th, 2025 4:48 PM
Author: Deep Hissy Fit



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



Reply Favorite

Date: December 23rd, 2025 2:34 AM
Author: pontificating azn



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



Reply Favorite

Date: December 23rd, 2025 2:46 AM
Author: Bossy stimulating lodge



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



Reply Favorite

Date: December 23rd, 2025 6:43 AM
Author: Exhilarant Hall Cuckoldry



(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: well-lubricated chestnut genital piercing idiot

yes

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



Reply Favorite

Date: October 12th, 2024 4:02 PM
Author: bonkers resort

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: Rough-skinned senate

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: bat-shit-crazy milky background story

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)