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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?
Massive Pearly Theater Regret
  10/11/24
I dunno. What if she has a nice ass?
gay jet-lagged rigpig scourge upon the earth
  10/11/24
more detail plz
Pea-brained filthpig
  10/11/24
...
gay jet-lagged rigpig scourge upon the earth
  10/11/24
It probably depends on how much you hate your bio parent and...
Learning disabled transparent parlour psychic
  10/11/24
do u know what a sister in law is?
judgmental fishy tank stage
  10/11/24
he's watched too much porn
aromatic disrespectful meetinghouse
  10/11/24
Objection, nonresponsive
Learning disabled transparent parlour psychic
  10/11/24
...
galvanic dilemma giraffe
  12/23/25
I do but I prefer fantasizing about my non-existent step sis...
Learning disabled transparent parlour psychic
  10/11/24
Not sure if this analysis is on point. The less it's justifi...
wine tripping native
  10/11/24
sleeping with anyone within your orbit of friends & fami...
alcoholic sienna boistinker
  10/11/24
mostly cr
Massive Pearly Theater Regret
  10/11/24
...
Thriller church
  10/12/24
this is exactly why I never sleep with my wife
trip domesticated shitlib
  12/23/25
depends on if your wife is dead or not
aromatic disrespectful meetinghouse
  10/11/24
i believe this is colloquially known as "the biden rule...
alcoholic sienna boistinker
  10/11/24
...
irradiated bipolar jewess genital piercing
  11/30/25
only if you don't take pictures to share with us
rambunctious adventurous indian lodge
  10/11/24
(martin brodeur)
Big personal credit line toaster
  10/11/24
Anyone who doesn't at least understand the temptation doesn'...
Excitant turdskin
  10/12/24
This. Plus they are always hugging and kissing you.
medicated kitchen doctorate
  10/12/24
...
rambunctious adventurous indian lodge
  12/23/25
Wtf
Massive Pearly Theater Regret
  10/12/24
This is my life. Constant blue balls.
Excitant turdskin
  10/12/24
...
Pea-brained filthpig
  11/30/25
Is she a spicy Latina?
fluffy slimy institution affirmative action
  10/12/24
...
irradiated bipolar jewess genital piercing
  11/30/25
Youngest SiL is trim, has a 180 ass and is always kissing me...
medicated kitchen doctorate
  10/12/24
180
emerald heady mad cow disease
  10/12/24
...
Exhilarant violent puppy
  10/12/24
twist: the sil was Catherine of aragorn
idiotic naked tanning salon
  10/12/24
If first brother was childless then this is classic Levirate...
Big-titted Pit People Who Are Hurt
  10/12/24
...
Exhilarant violent puppy
  10/12/24
He's literally the closest replacement for the guy. I can't ...
Big-titted Pit People Who Are Hurt
  10/12/24
...
Exhilarant violent puppy
  10/12/24
You're doing it for the purpose of having children, through ...
Big-titted Pit People Who Are Hurt
  10/13/24
are we talking about your wife's sister or your brother's wi...
motley shrine twinkling uncleanness
  10/12/24
How many times do we have to go over this.
Thirsty Hairy Legs Garrison
  10/12/24
...
titillating olive hell dog poop
  10/12/24
...
irradiated bipolar jewess genital piercing
  11/30/25
...
titillating olive hell dog poop
  12/23/25
...
galvanic dilemma giraffe
  12/23/25
...
low-t painfully honest macaca
  12/23/25
yes
exciting tan main people
  10/12/24
voice of reason as always cbtp
Massive Pearly Theater Regret
  10/12/24
not as deranged as brother-in-law
sooty brunch
  10/12/24
Wife’s sister or your bros wife = deranged wife&rsq...
electric range toilet seat
  12/23/25


Poast new message in this thread



Reply Favorite

Date: October 11th, 2024 4:34 PM
Author: Massive Pearly Theater Regret

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

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



Reply Favorite

Date: October 11th, 2024 4:34 PM
Author: gay jet-lagged rigpig scourge upon the earth

I dunno. What if she has a nice ass?

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



Reply Favorite

Date: October 11th, 2024 4:35 PM
Author: Pea-brained filthpig

more detail plz

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



Reply Favorite

Date: October 11th, 2024 4:37 PM
Author: gay jet-lagged rigpig scourge upon the earth



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



Reply Favorite

Date: October 11th, 2024 4:40 PM
Author: Learning disabled transparent parlour psychic

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/en-en/#48188001)



Reply Favorite

Date: October 11th, 2024 4:41 PM
Author: judgmental fishy tank stage

do u know what a sister in law is?

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



Reply Favorite

Date: October 11th, 2024 4:44 PM
Author: aromatic disrespectful meetinghouse

he's watched too much porn

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



Reply Favorite

Date: October 11th, 2024 7:51 PM
Author: Learning disabled transparent parlour psychic

Objection, nonresponsive

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



Reply Favorite

Date: December 23rd, 2025 2:44 AM
Author: galvanic dilemma giraffe



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



Reply Favorite

Date: October 11th, 2024 7:50 PM
Author: Learning disabled transparent parlour psychic

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/en-en/#48188616)



Reply Favorite

Date: October 11th, 2024 8:22 PM
Author: wine tripping native

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/en-en/#48188745)



Reply Favorite

Date: October 11th, 2024 4:42 PM
Author: alcoholic sienna boistinker

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/en-en/#48188009)



Reply Favorite

Date: October 11th, 2024 4:50 PM
Author: Massive Pearly Theater Regret

mostly cr

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



Reply Favorite

Date: October 12th, 2024 3:21 PM
Author: Thriller church



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



Reply Favorite

Date: December 23rd, 2025 2:58 AM
Author: trip domesticated shitlib

this is exactly why I never sleep with my wife

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



Reply Favorite

Date: October 11th, 2024 4:44 PM
Author: aromatic disrespectful meetinghouse

depends on if your wife is dead or not

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



Reply Favorite

Date: October 11th, 2024 4:44 PM
Author: alcoholic sienna boistinker

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

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



Reply Favorite

Date: November 30th, 2025 4:48 PM
Author: irradiated bipolar jewess genital piercing



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



Reply Favorite

Date: October 11th, 2024 4:48 PM
Author: rambunctious adventurous indian lodge

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

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



Reply Favorite

Date: October 11th, 2024 8:14 PM
Author: Big personal credit line toaster

(martin brodeur)

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



Reply Favorite

Date: October 12th, 2024 10:56 AM
Author: Excitant turdskin

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/en-en/#48189844)



Reply Favorite

Date: October 12th, 2024 11:38 AM
Author: medicated kitchen doctorate

This. Plus they are always hugging and kissing you.

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



Reply Favorite

Date: December 23rd, 2025 6:52 AM
Author: rambunctious adventurous indian lodge



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



Reply Favorite

Date: October 12th, 2024 3:45 PM
Author: Massive Pearly Theater Regret

Wtf

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



Reply Favorite

Date: October 12th, 2024 5:01 PM
Author: Excitant turdskin

This is my life. Constant blue balls.

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



Reply Favorite

Date: November 30th, 2025 4:44 PM
Author: Pea-brained filthpig



(http://www.autoadmit.com/thread.php?thread_id=5610171&forum_id=2/en-en/#49472629)



Reply Favorite

Date: October 12th, 2024 11:41 AM
Author: fluffy slimy institution affirmative action

Is she a spicy Latina?

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



Reply Favorite

Date: November 30th, 2025 4:48 PM
Author: irradiated bipolar jewess genital piercing



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



Reply Favorite

Date: October 12th, 2024 11:44 AM
Author: medicated kitchen doctorate

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/en-en/#48189964)



Reply Favorite

Date: October 12th, 2024 3:45 PM
Author: emerald heady mad cow disease

180

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



Reply Favorite

Date: October 12th, 2024 11:48 AM
Author: Exhilarant violent puppy



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



Reply Favorite

Date: October 12th, 2024 3:17 PM
Author: idiotic naked tanning salon

twist: the sil was Catherine of aragorn

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



Reply Favorite

Date: October 12th, 2024 3:20 PM
Author: Big-titted Pit People Who Are Hurt

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/en-en/#48190659)



Reply Favorite

Date: October 12th, 2024 3:25 PM
Author: Exhilarant violent puppy



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



Reply Favorite

Date: October 12th, 2024 3:34 PM
Author: Big-titted Pit People Who Are Hurt

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/en-en/#48190707)



Reply Favorite

Date: October 12th, 2024 3:38 PM
Author: Exhilarant violent puppy



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



Reply Favorite

Date: October 13th, 2024 12:04 AM
Author: Big-titted Pit People Who Are Hurt

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/en-en/#48191875)



Reply Favorite

Date: October 12th, 2024 11:50 AM
Author: motley shrine twinkling uncleanness

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/en-en/#48189984)



Reply Favorite

Date: October 12th, 2024 11:52 AM
Author: Thirsty Hairy Legs Garrison

How many times do we have to go over this.

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



Reply Favorite

Date: October 12th, 2024 4:01 PM
Author: titillating olive hell dog poop



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



Reply Favorite

Date: November 30th, 2025 4:48 PM
Author: irradiated bipolar jewess genital piercing



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



Reply Favorite

Date: December 23rd, 2025 2:34 AM
Author: titillating olive hell dog poop



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



Reply Favorite

Date: December 23rd, 2025 2:46 AM
Author: galvanic dilemma giraffe



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



Reply Favorite

Date: December 23rd, 2025 6:43 AM
Author: low-t painfully honest macaca



(http://www.autoadmit.com/thread.php?thread_id=5610171&forum_id=2/en-en/#49533170)



Reply Favorite

Date: October 12th, 2024 11:51 AM
Author: exciting tan main people

yes

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



Reply Favorite

Date: October 12th, 2024 4:02 PM
Author: Massive Pearly Theater Regret

voice of reason as always cbtp

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



Reply Favorite

Date: October 12th, 2024 11:57 AM
Author: sooty brunch

not as deranged as brother-in-law

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



Reply Favorite

Date: December 23rd, 2025 7:03 AM
Author: electric range toilet seat

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/en-en/#49533184)