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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?
Grizzly chest-beating location
  10/11/24
I dunno. What if she has a nice ass?
Aquamarine mediation juggernaut
  10/11/24
more detail plz
Puce marketing idea
  10/11/24
...
Aquamarine mediation juggernaut
  10/11/24
It probably depends on how much you hate your bio parent and...
Fiercely-loyal wagecucks
  10/11/24
do u know what a sister in law is?
Honey-headed puppy
  10/11/24
he's watched too much porn
aphrodisiac roommate
  10/11/24
Objection, nonresponsive
Fiercely-loyal wagecucks
  10/11/24
...
Fear-inspiring sanctuary
  12/23/25
I do but I prefer fantasizing about my non-existent step sis...
Fiercely-loyal wagecucks
  10/11/24
Not sure if this analysis is on point. The less it's justifi...
idiotic provocative nursing home
  10/11/24
sleeping with anyone within your orbit of friends & fami...
Adulterous brindle party of the first part community account
  10/11/24
mostly cr
Grizzly chest-beating location
  10/11/24
...
Anal Principal's Office Stock Car
  10/12/24
this is exactly why I never sleep with my wife
topaz multi-billionaire tank
  12/23/25
depends on if your wife is dead or not
aphrodisiac roommate
  10/11/24
i believe this is colloquially known as "the biden rule...
Adulterous brindle party of the first part community account
  10/11/24
...
mentally impaired house
  11/30/25
only if you don't take pictures to share with us
spectacular bearded box office
  10/11/24
(martin brodeur)
Razzle Poppy Business Firm Tattoo
  10/11/24
Anyone who doesn't at least understand the temptation doesn'...
big-titted wrinkle dragon
  10/12/24
This. Plus they are always hugging and kissing you.
angry soul-stirring garrison
  10/12/24
...
spectacular bearded box office
  12/23/25
Wtf
Grizzly chest-beating location
  10/12/24
This is my life. Constant blue balls.
big-titted wrinkle dragon
  10/12/24
...
Puce marketing idea
  11/30/25
i'm married to the younger hotter sister, and the temptation...
...,,..;...,,..,..,...,,,;..,
  06/03/26
Is she a spicy Latina?
Swashbuckling scourge upon the earth
  10/12/24
...
mentally impaired house
  11/30/25
Youngest SiL is trim, has a 180 ass and is always kissing me...
angry soul-stirring garrison
  10/12/24
180
lilac theater stage ceo
  10/12/24
...
Heady copper main people market
  10/12/24
twist: the sil was Catherine of aragorn
Duck-like Piazza
  10/12/24
If first brother was childless then this is classic Levirate...
Histrionic Milky Rigpig Public Bath
  10/12/24
...
Heady copper main people market
  10/12/24
He's literally the closest replacement for the guy. I can't ...
Histrionic Milky Rigpig Public Bath
  10/12/24
...
Heady copper main people market
  10/12/24
You're doing it for the purpose of having children, through ...
Histrionic Milky Rigpig Public Bath
  10/13/24
are we talking about your wife's sister or your brother's wi...
Rebellious abode
  10/12/24
How many times do we have to go over this.
Crusty theatre
  10/12/24
...
Trip Dog Poop
  10/12/24
...
mentally impaired house
  11/30/25
...
Trip Dog Poop
  12/23/25
...
Fear-inspiring sanctuary
  12/23/25
...
Chartreuse stag film mother
  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
Thriller seedy spot
  10/12/24
voice of reason as always cbtp
Grizzly chest-beating location
  10/12/24
not as deranged as brother-in-law
wild factory reset button codepig
  10/12/24
Wife’s sister or your bros wife = deranged wife&rsq...
Irradiated Arrogant Corn Cake Brunch
  12/23/25


Poast new message in this thread



Reply Favorite

Date: October 11th, 2024 4:34 PM
Author: Grizzly chest-beating location

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: Aquamarine mediation juggernaut

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: Puce marketing idea

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: Aquamarine mediation juggernaut



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



Reply Favorite

Date: October 11th, 2024 4:40 PM
Author: Fiercely-loyal wagecucks

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: Honey-headed puppy

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: aphrodisiac roommate

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: Fiercely-loyal wagecucks

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: Fear-inspiring sanctuary



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



Reply Favorite

Date: October 11th, 2024 7:50 PM
Author: Fiercely-loyal wagecucks

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 provocative nursing home

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: Adulterous brindle party of the first part community account

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: Grizzly chest-beating location

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: Anal Principal's Office Stock Car



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



Reply Favorite

Date: December 23rd, 2025 2:58 AM
Author: topaz multi-billionaire tank

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: aphrodisiac roommate

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: Adulterous brindle party of the first part community account

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: mentally impaired house



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



Reply Favorite

Date: October 11th, 2024 4:48 PM
Author: spectacular bearded box office

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: Razzle Poppy Business Firm Tattoo

(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: big-titted wrinkle dragon

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: angry soul-stirring garrison

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: spectacular bearded box office



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



Reply Favorite

Date: October 12th, 2024 3:45 PM
Author: Grizzly chest-beating location

Wtf

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



Reply Favorite

Date: October 12th, 2024 5:01 PM
Author: big-titted wrinkle dragon

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: Puce marketing idea



(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: Swashbuckling scourge upon the earth

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: mentally impaired house



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



Reply Favorite

Date: October 12th, 2024 11:44 AM
Author: angry soul-stirring garrison

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: lilac theater stage ceo

180

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



Reply Favorite

Date: October 12th, 2024 11:48 AM
Author: Heady copper main people market



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



Reply Favorite

Date: October 12th, 2024 3:17 PM
Author: Duck-like Piazza

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: Histrionic Milky Rigpig Public Bath

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: Heady copper main people market



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



Reply Favorite

Date: October 12th, 2024 3:34 PM
Author: Histrionic Milky Rigpig Public Bath

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: Heady copper main people market



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



Reply Favorite

Date: October 13th, 2024 12:04 AM
Author: Histrionic Milky Rigpig Public Bath

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: Rebellious abode

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: Crusty theatre

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: Trip Dog Poop



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



Reply Favorite

Date: November 30th, 2025 4:48 PM
Author: mentally impaired house



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



Reply Favorite

Date: December 23rd, 2025 2:34 AM
Author: Trip Dog Poop



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



Reply Favorite

Date: December 23rd, 2025 2:46 AM
Author: Fear-inspiring sanctuary



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



Reply Favorite

Date: December 23rd, 2025 6:43 AM
Author: Chartreuse stag film mother



(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: Thriller seedy spot

yes

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



Reply Favorite

Date: October 12th, 2024 4:02 PM
Author: Grizzly chest-beating location

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: wild factory reset button codepig

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: Irradiated Arrogant Corn Cake Brunch

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)