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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?
lascivious karate property
  10/11/24
I dunno. What if she has a nice ass?
cracking cruel-hearted mother chapel
  10/11/24
more detail plz
doobsian salmon messiness
  10/11/24
...
cracking cruel-hearted mother chapel
  10/11/24
It probably depends on how much you hate your bio parent and...
unhinged theater new version
  10/11/24
do u know what a sister in law is?
vivacious nursing home
  10/11/24
he's watched too much porn
lemon parlor gay wizard
  10/11/24
Objection, nonresponsive
unhinged theater new version
  10/11/24
...
Exciting underhanded orchestra pit
  12/23/25
I do but I prefer fantasizing about my non-existent step sis...
unhinged theater new version
  10/11/24
Not sure if this analysis is on point. The less it's justifi...
idiotic marvelous spot turdskin
  10/11/24
sleeping with anyone within your orbit of friends & fami...
Ruddy Tank
  10/11/24
mostly cr
lascivious karate property
  10/11/24
...
chrome house doctorate
  10/12/24
this is exactly why I never sleep with my wife
startling provocative gaming laptop
  12/23/25
depends on if your wife is dead or not
lemon parlor gay wizard
  10/11/24
i believe this is colloquially known as "the biden rule...
Ruddy Tank
  10/11/24
...
Pea-brained Church Building Laser Beams
  11/30/25
only if you don't take pictures to share with us
clear generalized bond
  10/11/24
(martin brodeur)
Irradiated submissive tanning salon azn
  10/11/24
Anyone who doesn't at least understand the temptation doesn'...
Galvanic crimson stain
  10/12/24
This. Plus they are always hugging and kissing you.
Unholy Nibblets Stag Film
  10/12/24
...
clear generalized bond
  12/23/25
Wtf
lascivious karate property
  10/12/24
This is my life. Constant blue balls.
Galvanic crimson stain
  10/12/24
...
doobsian salmon messiness
  11/30/25
i'm married to the younger hotter sister, and the temptation...
...,,..;...,,..,..,...,,,;..,
  06/03/26
Is she a spicy Latina?
bat shit crazy translucent sweet tailpipe
  10/12/24
...
Pea-brained Church Building Laser Beams
  11/30/25
Youngest SiL is trim, has a 180 ass and is always kissing me...
Unholy Nibblets Stag Film
  10/12/24
180
Hot Degenerate Senate
  10/12/24
...
Mischievous sex offender
  10/12/24
twist: the sil was Catherine of aragorn
bisexual claret church elastic band
  10/12/24
If first brother was childless then this is classic Levirate...
Walnut indecent market crotch
  10/12/24
...
Mischievous sex offender
  10/12/24
He's literally the closest replacement for the guy. I can't ...
Walnut indecent market crotch
  10/12/24
...
Mischievous sex offender
  10/12/24
You're doing it for the purpose of having children, through ...
Walnut indecent market crotch
  10/13/24
are we talking about your wife's sister or your brother's wi...
Fragrant Heaven
  10/12/24
How many times do we have to go over this.
godawful mexican office
  10/12/24
...
razzmatazz digit ratio
  10/12/24
...
Pea-brained Church Building Laser Beams
  11/30/25
...
razzmatazz digit ratio
  12/23/25
...
Exciting underhanded orchestra pit
  12/23/25
...
Yellow Domesticated Theater Stage Organic Girlfriend
  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
rose beady-eyed casino
  10/12/24
voice of reason as always cbtp
lascivious karate property
  10/12/24
not as deranged as brother-in-law
Multi-colored abnormal base
  10/12/24
Wife’s sister or your bros wife = deranged wife&rsq...
Cerebral psychic affirmative action
  12/23/25


Poast new message in this thread



Reply Favorite

Date: October 11th, 2024 4:34 PM
Author: lascivious karate property

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: cracking cruel-hearted mother chapel

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: doobsian salmon messiness

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: cracking cruel-hearted mother chapel



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



Reply Favorite

Date: October 11th, 2024 4:40 PM
Author: unhinged theater new version

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: vivacious nursing home

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: lemon parlor gay wizard

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: unhinged theater new version

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: Exciting underhanded 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: unhinged theater new version

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: idiotic marvelous spot turdskin

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: Ruddy Tank

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: lascivious karate property

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: chrome house doctorate



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



Reply Favorite

Date: December 23rd, 2025 2:58 AM
Author: startling provocative gaming laptop

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: lemon parlor gay wizard

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: Ruddy Tank

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: Pea-brained Church Building Laser Beams



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



Reply Favorite

Date: October 11th, 2024 4:48 PM
Author: clear 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: Irradiated submissive tanning salon azn

(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: Galvanic crimson stain

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: Unholy Nibblets Stag Film

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: clear 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: lascivious karate property

Wtf

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



Reply Favorite

Date: October 12th, 2024 5:01 PM
Author: Galvanic crimson stain

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: doobsian salmon messiness



(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: bat shit crazy translucent sweet tailpipe

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: Pea-brained Church Building Laser Beams



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



Reply Favorite

Date: October 12th, 2024 11:44 AM
Author: Unholy Nibblets Stag Film

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: Hot Degenerate Senate

180

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



Reply Favorite

Date: October 12th, 2024 11:48 AM
Author: Mischievous sex offender



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



Reply Favorite

Date: October 12th, 2024 3:17 PM
Author: bisexual claret church elastic band

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: Walnut indecent market crotch

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: Mischievous sex offender



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



Reply Favorite

Date: October 12th, 2024 3:34 PM
Author: Walnut indecent market crotch

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: Mischievous sex offender



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



Reply Favorite

Date: October 13th, 2024 12:04 AM
Author: Walnut indecent market crotch

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: Fragrant Heaven

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: godawful mexican office

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: razzmatazz digit ratio



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



Reply Favorite

Date: November 30th, 2025 4:48 PM
Author: Pea-brained Church Building Laser Beams



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



Reply Favorite

Date: December 23rd, 2025 2:34 AM
Author: razzmatazz digit ratio



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



Reply Favorite

Date: December 23rd, 2025 2:46 AM
Author: Exciting underhanded 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: Yellow Domesticated Theater Stage Organic Girlfriend



(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: rose beady-eyed casino

yes

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



Reply Favorite

Date: October 12th, 2024 4:02 PM
Author: lascivious karate property

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: Multi-colored abnormal base

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: Cerebral psychic affirmative action

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)