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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?
curious fanboi
  10/11/24
I dunno. What if she has a nice ass?
Insanely creepy principal's office
  10/11/24
more detail plz
Brilliant house round eye
  10/11/24
...
Insanely creepy principal's office
  10/11/24
It probably depends on how much you hate your bio parent and...
amber fear-inspiring bawdyhouse prole
  10/11/24
do u know what a sister in law is?
Translucent wrinkle
  10/11/24
he's watched too much porn
Cracking cerise crackhouse affirmative action
  10/11/24
Objection, nonresponsive
amber fear-inspiring bawdyhouse prole
  10/11/24
...
Carnelian Mental Disorder Becky
  12/23/25
I do but I prefer fantasizing about my non-existent step sis...
amber fear-inspiring bawdyhouse prole
  10/11/24
Not sure if this analysis is on point. The less it's justifi...
Garnet multi-colored stag film mexican
  10/11/24
sleeping with anyone within your orbit of friends & fami...
stirring chrome hospital
  10/11/24
mostly cr
curious fanboi
  10/11/24
...
nighttime scourge upon the earth temple
  10/12/24
this is exactly why I never sleep with my wife
Effete comical deer antler
  12/23/25
depends on if your wife is dead or not
Cracking cerise crackhouse affirmative action
  10/11/24
i believe this is colloquially known as "the biden rule...
stirring chrome hospital
  10/11/24
...
irradiated sooty step-uncle's house quadroon
  11/30/25
only if you don't take pictures to share with us
hideous roast beef ceo
  10/11/24
(martin brodeur)
Walnut Thriller Ape
  10/11/24
Anyone who doesn't at least understand the temptation doesn'...
offensive shaky twinkling uncleanness
  10/12/24
This. Plus they are always hugging and kissing you.
pink sinister meetinghouse nowag
  10/12/24
...
hideous roast beef ceo
  12/23/25
Wtf
curious fanboi
  10/12/24
This is my life. Constant blue balls.
offensive shaky twinkling uncleanness
  10/12/24
...
Brilliant house round eye
  11/30/25
Is she a spicy Latina?
at-the-ready razzle theater
  10/12/24
...
irradiated sooty step-uncle's house quadroon
  11/30/25
Youngest SiL is trim, has a 180 ass and is always kissing me...
pink sinister meetinghouse nowag
  10/12/24
180
Demanding cuck
  10/12/24
...
Lascivious anal orchestra pit
  10/12/24
twist: the sil was Catherine of aragorn
judgmental native
  10/12/24
If first brother was childless then this is classic Levirate...
Emerald Cuckold Keepsake Machete
  10/12/24
...
Lascivious anal orchestra pit
  10/12/24
He's literally the closest replacement for the guy. I can't ...
Emerald Cuckold Keepsake Machete
  10/12/24
...
Lascivious anal orchestra pit
  10/12/24
You're doing it for the purpose of having children, through ...
Emerald Cuckold Keepsake Machete
  10/13/24
are we talking about your wife's sister or your brother's wi...
Cobalt vivacious death wish rehab
  10/12/24
How many times do we have to go over this.
learning disabled scarlet selfie
  10/12/24
...
beady-eyed pozpig
  10/12/24
...
irradiated sooty step-uncle's house quadroon
  11/30/25
...
beady-eyed pozpig
  12/23/25
...
Carnelian Mental Disorder Becky
  12/23/25
...
Aphrodisiac mad cow disease public bath
  12/23/25
yes
marvelous national security agency
  10/12/24
voice of reason as always cbtp
curious fanboi
  10/12/24
not as deranged as brother-in-law
grizzly clown
  10/12/24
Wife’s sister or your bros wife = deranged wife&rsq...
razzmatazz incel regret
  12/23/25


Poast new message in this thread



Reply Favorite

Date: October 11th, 2024 4:34 PM
Author: curious fanboi

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: Insanely creepy principal's office

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: Brilliant house round eye

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: Insanely creepy principal's office



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



Reply Favorite

Date: October 11th, 2024 4:40 PM
Author: amber fear-inspiring bawdyhouse prole

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: Translucent wrinkle

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: Cracking cerise crackhouse affirmative action

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: amber fear-inspiring bawdyhouse prole

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: Carnelian Mental Disorder Becky



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



Reply Favorite

Date: October 11th, 2024 7:50 PM
Author: amber fear-inspiring bawdyhouse prole

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: Garnet multi-colored stag film mexican

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: stirring chrome hospital

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: curious fanboi

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: nighttime scourge upon the earth temple



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



Reply Favorite

Date: December 23rd, 2025 2:58 AM
Author: Effete comical deer antler

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: Cracking cerise crackhouse affirmative action

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: stirring chrome hospital

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: irradiated sooty step-uncle's house quadroon



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



Reply Favorite

Date: October 11th, 2024 4:48 PM
Author: hideous roast beef ceo

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: Walnut Thriller Ape

(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: offensive shaky twinkling uncleanness

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: pink sinister meetinghouse nowag

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: hideous roast beef ceo



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



Reply Favorite

Date: October 12th, 2024 3:45 PM
Author: curious fanboi

Wtf

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



Reply Favorite

Date: October 12th, 2024 5:01 PM
Author: offensive shaky twinkling uncleanness

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: Brilliant house round eye



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



Reply Favorite

Date: October 12th, 2024 11:41 AM
Author: at-the-ready razzle theater

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: irradiated sooty step-uncle's house quadroon



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



Reply Favorite

Date: October 12th, 2024 11:44 AM
Author: pink sinister meetinghouse nowag

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: Demanding cuck

180

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



Reply Favorite

Date: October 12th, 2024 11:48 AM
Author: Lascivious anal orchestra pit



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



Reply Favorite

Date: October 12th, 2024 3:17 PM
Author: judgmental native

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: Emerald Cuckold Keepsake Machete

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: Lascivious anal orchestra pit



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



Reply Favorite

Date: October 12th, 2024 3:34 PM
Author: Emerald Cuckold Keepsake Machete

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: Lascivious anal orchestra pit



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



Reply Favorite

Date: October 13th, 2024 12:04 AM
Author: Emerald Cuckold Keepsake Machete

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: Cobalt vivacious death wish rehab

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: learning disabled scarlet selfie

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: beady-eyed pozpig



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



Reply Favorite

Date: November 30th, 2025 4:48 PM
Author: irradiated sooty step-uncle's house quadroon



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



Reply Favorite

Date: December 23rd, 2025 2:34 AM
Author: beady-eyed pozpig



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



Reply Favorite

Date: December 23rd, 2025 2:46 AM
Author: Carnelian Mental Disorder Becky



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



Reply Favorite

Date: December 23rd, 2025 6:43 AM
Author: Aphrodisiac mad cow disease public bath



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



Reply Favorite

Date: October 12th, 2024 11:51 AM
Author: marvelous national security agency

yes

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



Reply Favorite

Date: October 12th, 2024 4:02 PM
Author: curious fanboi

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: grizzly clown

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: razzmatazz incel regret

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)