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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?
rough-skinned depressive
  10/11/24
I dunno. What if she has a nice ass?
sienna area ratface
  10/11/24
more detail plz
Salmon becky partner
  10/11/24
...
sienna area ratface
  10/11/24
It probably depends on how much you hate your bio parent and...
flickering heaven selfie
  10/11/24
do u know what a sister in law is?
soul-stirring hell
  10/11/24
he's watched too much porn
diverse unholy box office
  10/11/24
Objection, nonresponsive
flickering heaven selfie
  10/11/24
...
Marvelous Carnelian Idiot
  12/23/25
I do but I prefer fantasizing about my non-existent step sis...
flickering heaven selfie
  10/11/24
Not sure if this analysis is on point. The less it's justifi...
chrome half-breed
  10/11/24
sleeping with anyone within your orbit of friends & fami...
orange stubborn mental disorder pit
  10/11/24
mostly cr
rough-skinned depressive
  10/11/24
...
Naked mint address
  10/12/24
this is exactly why I never sleep with my wife
Geriatric step-uncle's house
  12/23/25
depends on if your wife is dead or not
diverse unholy box office
  10/11/24
i believe this is colloquially known as "the biden rule...
orange stubborn mental disorder pit
  10/11/24
...
bronze national mexican
  11/30/25
only if you don't take pictures to share with us
Violet Home
  10/11/24
(martin brodeur)
Lime Vigorous Nursing Home Organic Girlfriend
  10/11/24
Anyone who doesn't at least understand the temptation doesn'...
Topaz provocative hospital
  10/12/24
This. Plus they are always hugging and kissing you.
magenta insecure boiling water
  10/12/24
...
Violet Home
  12/23/25
Wtf
rough-skinned depressive
  10/12/24
This is my life. Constant blue balls.
Topaz provocative hospital
  10/12/24
...
Salmon becky partner
  11/30/25
i'm married to the younger hotter sister, and the temptation...
...,,..;...,,..,..,...,,,;..,
  06/03/26
Is she a spicy Latina?
fragrant impertinent dog poop
  10/12/24
...
bronze national mexican
  11/30/25
Youngest SiL is trim, has a 180 ass and is always kissing me...
magenta insecure boiling water
  10/12/24
180
fighting regret institution
  10/12/24
...
deep fortuitous meteor filthpig
  10/12/24
twist: the sil was Catherine of aragorn
slippery pervert
  10/12/24
If first brother was childless then this is classic Levirate...
rose heady cuckold menage
  10/12/24
...
deep fortuitous meteor filthpig
  10/12/24
He's literally the closest replacement for the guy. I can't ...
rose heady cuckold menage
  10/12/24
...
deep fortuitous meteor filthpig
  10/12/24
You're doing it for the purpose of having children, through ...
rose heady cuckold menage
  10/13/24
are we talking about your wife's sister or your brother's wi...
self-centered house wagecucks
  10/12/24
How many times do we have to go over this.
Gaped den ceo
  10/12/24
...
honey-headed station crotch
  10/12/24
...
bronze national mexican
  11/30/25
...
honey-headed station crotch
  12/23/25
...
Marvelous Carnelian Idiot
  12/23/25
...
snowy low-t meetinghouse rigpig
  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
crystalline excitant trailer park
  10/12/24
voice of reason as always cbtp
rough-skinned depressive
  10/12/24
not as deranged as brother-in-law
Fluffy Passionate Feces Background Story
  10/12/24
Wife’s sister or your bros wife = deranged wife&rsq...
Pearly arousing private investor
  12/23/25


Poast new message in this thread



Reply Favorite

Date: October 11th, 2024 4:34 PM
Author: rough-skinned depressive

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: sienna area ratface

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: Salmon becky partner

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: sienna area ratface



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



Reply Favorite

Date: October 11th, 2024 4:40 PM
Author: flickering heaven selfie

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: soul-stirring hell

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: diverse unholy box office

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: flickering heaven selfie

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: Marvelous Carnelian Idiot



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



Reply Favorite

Date: October 11th, 2024 7:50 PM
Author: flickering heaven selfie

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: chrome half-breed

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: orange stubborn mental disorder pit

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: rough-skinned depressive

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: Naked mint address



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



Reply Favorite

Date: December 23rd, 2025 2:58 AM
Author: Geriatric step-uncle's house

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: diverse unholy box office

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: orange stubborn mental disorder pit

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: bronze national mexican



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



Reply Favorite

Date: October 11th, 2024 4:48 PM
Author: Violet Home

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: Lime Vigorous Nursing Home Organic Girlfriend

(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: Topaz provocative hospital

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: magenta insecure boiling water

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: Violet Home



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



Reply Favorite

Date: October 12th, 2024 3:45 PM
Author: rough-skinned depressive

Wtf

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



Reply Favorite

Date: October 12th, 2024 5:01 PM
Author: Topaz provocative hospital

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: Salmon becky partner



(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: fragrant impertinent dog poop

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: bronze national mexican



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



Reply Favorite

Date: October 12th, 2024 11:44 AM
Author: magenta insecure boiling water

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: fighting regret institution

180

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



Reply Favorite

Date: October 12th, 2024 11:48 AM
Author: deep fortuitous meteor filthpig



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



Reply Favorite

Date: October 12th, 2024 3:17 PM
Author: slippery pervert

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: rose heady cuckold menage

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: deep fortuitous meteor filthpig



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



Reply Favorite

Date: October 12th, 2024 3:34 PM
Author: rose heady cuckold menage

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: deep fortuitous meteor filthpig



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



Reply Favorite

Date: October 13th, 2024 12:04 AM
Author: rose heady cuckold menage

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: self-centered house wagecucks

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: Gaped den ceo

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: honey-headed station crotch



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



Reply Favorite

Date: November 30th, 2025 4:48 PM
Author: bronze national mexican



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



Reply Favorite

Date: December 23rd, 2025 2:34 AM
Author: honey-headed station crotch



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



Reply Favorite

Date: December 23rd, 2025 2:46 AM
Author: Marvelous Carnelian Idiot



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



Reply Favorite

Date: December 23rd, 2025 6:43 AM
Author: snowy low-t meetinghouse rigpig



(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: crystalline excitant trailer park

yes

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



Reply Favorite

Date: October 12th, 2024 4:02 PM
Author: rough-skinned depressive

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: Fluffy Passionate Feces Background Story

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: Pearly arousing private investor

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)