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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?
bright spot
  10/11/24
I dunno. What if she has a nice ass?
Emerald aphrodisiac pit voyeur
  10/11/24
more detail plz
maniacal degenerate school
  10/11/24
...
Emerald aphrodisiac pit voyeur
  10/11/24
It probably depends on how much you hate your bio parent and...
Boyish senate
  10/11/24
do u know what a sister in law is?
Sick bat-shit-crazy hell roast beef
  10/11/24
he's watched too much porn
Razzle menage
  10/11/24
Objection, nonresponsive
Boyish senate
  10/11/24
...
provocative doobsian temple
  12/23/25
I do but I prefer fantasizing about my non-existent step sis...
Boyish senate
  10/11/24
Not sure if this analysis is on point. The less it's justifi...
adventurous alcoholic nibblets liquid oxygen
  10/11/24
sleeping with anyone within your orbit of friends & fami...
fishy legal warrant juggernaut
  10/11/24
mostly cr
bright spot
  10/11/24
...
Aqua Address
  10/12/24
this is exactly why I never sleep with my wife
Salmon Area Boiling Water
  12/23/25
depends on if your wife is dead or not
Razzle menage
  10/11/24
i believe this is colloquially known as "the biden rule...
fishy legal warrant juggernaut
  10/11/24
...
narrow-minded jet striped hyena
  11/30/25
only if you don't take pictures to share with us
cocky talented nursing home
  10/11/24
(martin brodeur)
Impressive Dun Casino Ape
  10/11/24
Anyone who doesn't at least understand the temptation doesn'...
motley big-titted rehab
  10/12/24
This. Plus they are always hugging and kissing you.
Kink-friendly Gaping
  10/12/24
...
cocky talented nursing home
  12/23/25
Wtf
bright spot
  10/12/24
This is my life. Constant blue balls.
motley big-titted rehab
  10/12/24
...
maniacal degenerate school
  11/30/25
i'm married to the younger hotter sister, and the temptation...
...,,..;...,,..,..,...,,,;..,
  06/03/26
Is she a spicy Latina?
wine nubile orchestra pit
  10/12/24
...
narrow-minded jet striped hyena
  11/30/25
Youngest SiL is trim, has a 180 ass and is always kissing me...
Kink-friendly Gaping
  10/12/24
180
spectacular abode cuckoldry
  10/12/24
...
Curious frisky mexican
  10/12/24
twist: the sil was Catherine of aragorn
thriller mother
  10/12/24
If first brother was childless then this is classic Levirate...
floppy chest-beating site
  10/12/24
...
Curious frisky mexican
  10/12/24
He's literally the closest replacement for the guy. I can't ...
floppy chest-beating site
  10/12/24
...
Curious frisky mexican
  10/12/24
You're doing it for the purpose of having children, through ...
floppy chest-beating site
  10/13/24
are we talking about your wife's sister or your brother's wi...
Concupiscible confused patrolman
  10/12/24
How many times do we have to go over this.
stimulating locale
  10/12/24
...
Lascivious sweet tailpipe
  10/12/24
...
narrow-minded jet striped hyena
  11/30/25
...
Lascivious sweet tailpipe
  12/23/25
...
provocative doobsian temple
  12/23/25
...
contagious disgusting stag film
  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
Splenetic marvelous tanning salon
  10/12/24
voice of reason as always cbtp
bright spot
  10/12/24
not as deranged as brother-in-law
turquoise arrogant school cafeteria national security agency
  10/12/24
Wife’s sister or your bros wife = deranged wife&rsq...
diverse dilemma old irish cottage
  12/23/25


Poast new message in this thread



Reply Favorite

Date: October 11th, 2024 4:34 PM
Author: bright spot

Nobody moral would do this, right? These are just jokes?

(http://www.autoadmit.com/thread.php?thread_id=5610171&forum_id=2…id#48187983)



Reply Favorite

Date: October 11th, 2024 4:34 PM
Author: Emerald aphrodisiac pit voyeur

I dunno. What if she has a nice ass?

(http://www.autoadmit.com/thread.php?thread_id=5610171&forum_id=2…id#48187985)



Reply Favorite

Date: October 11th, 2024 4:35 PM
Author: maniacal degenerate school

more detail plz

(http://www.autoadmit.com/thread.php?thread_id=5610171&forum_id=2…id#48187988)



Reply Favorite

Date: October 11th, 2024 4:37 PM
Author: Emerald aphrodisiac pit voyeur



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



Reply Favorite

Date: October 11th, 2024 4:40 PM
Author: Boyish senate

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…id#48188001)



Reply Favorite

Date: October 11th, 2024 4:41 PM
Author: Sick bat-shit-crazy hell roast beef

do u know what a sister in law is?

(http://www.autoadmit.com/thread.php?thread_id=5610171&forum_id=2…id#48188004)



Reply Favorite

Date: October 11th, 2024 4:44 PM
Author: Razzle menage

he's watched too much porn

(http://www.autoadmit.com/thread.php?thread_id=5610171&forum_id=2…id#48188017)



Reply Favorite

Date: October 11th, 2024 7:51 PM
Author: Boyish senate

Objection, nonresponsive

(http://www.autoadmit.com/thread.php?thread_id=5610171&forum_id=2…id#48188617)



Reply Favorite

Date: December 23rd, 2025 2:44 AM
Author: provocative doobsian temple



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



Reply Favorite

Date: October 11th, 2024 7:50 PM
Author: Boyish senate

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…id#48188616)



Reply Favorite

Date: October 11th, 2024 8:22 PM
Author: adventurous alcoholic nibblets liquid oxygen

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…id#48188745)



Reply Favorite

Date: October 11th, 2024 4:42 PM
Author: fishy legal warrant juggernaut

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…id#48188009)



Reply Favorite

Date: October 11th, 2024 4:50 PM
Author: bright spot

mostly cr

(http://www.autoadmit.com/thread.php?thread_id=5610171&forum_id=2…id#48188040)



Reply Favorite

Date: October 12th, 2024 3:21 PM
Author: Aqua Address



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



Reply Favorite

Date: December 23rd, 2025 2:58 AM
Author: Salmon Area Boiling Water

this is exactly why I never sleep with my wife

(http://www.autoadmit.com/thread.php?thread_id=5610171&forum_id=2…id#49533050)



Reply Favorite

Date: October 11th, 2024 4:44 PM
Author: Razzle menage

depends on if your wife is dead or not

(http://www.autoadmit.com/thread.php?thread_id=5610171&forum_id=2…id#48188014)



Reply Favorite

Date: October 11th, 2024 4:44 PM
Author: fishy legal warrant juggernaut

i believe this is colloquially known as "the biden rule"

(http://www.autoadmit.com/thread.php?thread_id=5610171&forum_id=2…id#48188018)



Reply Favorite

Date: November 30th, 2025 4:48 PM
Author: narrow-minded jet striped hyena



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



Reply Favorite

Date: October 11th, 2024 4:48 PM
Author: cocky talented nursing home

only if you don't take pictures to share with us

(http://www.autoadmit.com/thread.php?thread_id=5610171&forum_id=2…id#48188026)



Reply Favorite

Date: October 11th, 2024 8:14 PM
Author: Impressive Dun Casino Ape

(martin brodeur)

(http://www.autoadmit.com/thread.php?thread_id=5610171&forum_id=2…id#48188717)



Reply Favorite

Date: October 12th, 2024 10:56 AM
Author: motley big-titted rehab

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…id#48189844)



Reply Favorite

Date: October 12th, 2024 11:38 AM
Author: Kink-friendly Gaping

This. Plus they are always hugging and kissing you.

(http://www.autoadmit.com/thread.php?thread_id=5610171&forum_id=2…id#48189951)



Reply Favorite

Date: December 23rd, 2025 6:52 AM
Author: cocky talented nursing home



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



Reply Favorite

Date: October 12th, 2024 3:45 PM
Author: bright spot

Wtf

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



Reply Favorite

Date: October 12th, 2024 5:01 PM
Author: motley big-titted rehab

This is my life. Constant blue balls.

(http://www.autoadmit.com/thread.php?thread_id=5610171&forum_id=2…id#48190953)



Reply Favorite

Date: November 30th, 2025 4:44 PM
Author: maniacal degenerate school



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



Reply Favorite

Date: October 12th, 2024 11:41 AM
Author: wine nubile orchestra pit

Is she a spicy Latina?

(http://www.autoadmit.com/thread.php?thread_id=5610171&forum_id=2…id#48189956)



Reply Favorite

Date: November 30th, 2025 4:48 PM
Author: narrow-minded jet striped hyena



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



Reply Favorite

Date: October 12th, 2024 11:44 AM
Author: Kink-friendly Gaping

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…id#48189964)



Reply Favorite

Date: October 12th, 2024 3:45 PM
Author: spectacular abode cuckoldry

180

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



Reply Favorite

Date: October 12th, 2024 11:48 AM
Author: Curious frisky mexican



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



Reply Favorite

Date: October 12th, 2024 3:17 PM
Author: thriller mother

twist: the sil was Catherine of aragorn

(http://www.autoadmit.com/thread.php?thread_id=5610171&forum_id=2…id#48190647)



Reply Favorite

Date: October 12th, 2024 3:20 PM
Author: floppy chest-beating site

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…id#48190659)



Reply Favorite

Date: October 12th, 2024 3:25 PM
Author: Curious frisky mexican



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



Reply Favorite

Date: October 12th, 2024 3:34 PM
Author: floppy chest-beating site

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…id#48190707)



Reply Favorite

Date: October 12th, 2024 3:38 PM
Author: Curious frisky mexican



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



Reply Favorite

Date: October 13th, 2024 12:04 AM
Author: floppy chest-beating site

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…id#48191875)



Reply Favorite

Date: October 12th, 2024 11:50 AM
Author: Concupiscible confused patrolman

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…id#48189984)



Reply Favorite

Date: October 12th, 2024 11:52 AM
Author: stimulating locale

How many times do we have to go over this.

(http://www.autoadmit.com/thread.php?thread_id=5610171&forum_id=2…id#48189992)



Reply Favorite

Date: October 12th, 2024 4:01 PM
Author: Lascivious sweet tailpipe



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



Reply Favorite

Date: November 30th, 2025 4:48 PM
Author: narrow-minded jet striped hyena



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



Reply Favorite

Date: December 23rd, 2025 2:34 AM
Author: Lascivious sweet tailpipe



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



Reply Favorite

Date: December 23rd, 2025 2:46 AM
Author: provocative doobsian temple



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



Reply Favorite

Date: December 23rd, 2025 6:43 AM
Author: contagious disgusting stag film



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



Reply Favorite

Date: October 12th, 2024 11:51 AM
Author: Splenetic marvelous tanning salon

yes

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



Reply Favorite

Date: October 12th, 2024 4:02 PM
Author: bright spot

voice of reason as always cbtp

(http://www.autoadmit.com/thread.php?thread_id=5610171&forum_id=2…id#48190802)



Reply Favorite

Date: October 12th, 2024 11:57 AM
Author: turquoise arrogant school cafeteria national security agency

not as deranged as brother-in-law

(http://www.autoadmit.com/thread.php?thread_id=5610171&forum_id=2…id#48190004)



Reply Favorite

Date: December 23rd, 2025 7:03 AM
Author: diverse dilemma old irish cottage

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…id#49533184)