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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?
fishy flirting nowag church building
  10/11/24
I dunno. What if she has a nice ass?
gaped field corn cake
  10/11/24
more detail plz
Aphrodisiac ruby alpha turdskin
  10/11/24
...
gaped field corn cake
  10/11/24
It probably depends on how much you hate your bio parent and...
Carnelian School Cafeteria
  10/11/24
do u know what a sister in law is?
Erotic insanely creepy trailer park faggotry
  10/11/24
he's watched too much porn
ungodly flatulent giraffe
  10/11/24
Objection, nonresponsive
Carnelian School Cafeteria
  10/11/24
...
green toaster
  12/23/25
I do but I prefer fantasizing about my non-existent step sis...
Carnelian School Cafeteria
  10/11/24
Not sure if this analysis is on point. The less it's justifi...
Vigorous Self-absorbed Dopamine Shrine
  10/11/24
sleeping with anyone within your orbit of friends & fami...
Dashing Ratface Menage
  10/11/24
mostly cr
fishy flirting nowag church building
  10/11/24
...
Racy Frozen Office
  10/12/24
this is exactly why I never sleep with my wife
chest-beating fat ankles orchestra pit
  12/23/25
depends on if your wife is dead or not
ungodly flatulent giraffe
  10/11/24
i believe this is colloquially known as "the biden rule...
Dashing Ratface Menage
  10/11/24
...
vermilion sex offender
  11/30/25
only if you don't take pictures to share with us
insane impressive feces
  10/11/24
(martin brodeur)
Crimson casino striped hyena
  10/11/24
Anyone who doesn't at least understand the temptation doesn'...
awkward contagious temple
  10/12/24
This. Plus they are always hugging and kissing you.
dark ticket booth masturbator
  10/12/24
...
insane impressive feces
  12/23/25
Wtf
fishy flirting nowag church building
  10/12/24
This is my life. Constant blue balls.
awkward contagious temple
  10/12/24
...
Aphrodisiac ruby alpha turdskin
  11/30/25
i'm married to the younger hotter sister, and the temptation...
...,,..;...,,..,..,...,,,;..,
  06/03/26
Is she a spicy Latina?
brindle hissy fit boiling water
  10/12/24
...
vermilion sex offender
  11/30/25
Youngest SiL is trim, has a 180 ass and is always kissing me...
dark ticket booth masturbator
  10/12/24
180
Titillating lodge
  10/12/24
...
Pearly spot
  10/12/24
twist: the sil was Catherine of aragorn
exhilarant chocolate headpube
  10/12/24
If first brother was childless then this is classic Levirate...
bistre stage
  10/12/24
...
Pearly spot
  10/12/24
He's literally the closest replacement for the guy. I can't ...
bistre stage
  10/12/24
...
Pearly spot
  10/12/24
You're doing it for the purpose of having children, through ...
bistre stage
  10/13/24
are we talking about your wife's sister or your brother's wi...
Comical famous landscape painting
  10/12/24
How many times do we have to go over this.
french fanboi hairy legs
  10/12/24
...
Spectacular drab parlour twinkling uncleanness
  10/12/24
...
vermilion sex offender
  11/30/25
...
Spectacular drab parlour twinkling uncleanness
  12/23/25
...
green toaster
  12/23/25
...
laughsome public bath
  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
Copper Mildly Autistic Rehab Filthpig
  10/12/24
voice of reason as always cbtp
fishy flirting nowag church building
  10/12/24
not as deranged as brother-in-law
Maniacal philosopher-king
  10/12/24
Wife’s sister or your bros wife = deranged wife&rsq...
twinkling razzle-dazzle dysfunction kitty
  12/23/25


Poast new message in this thread



Reply Favorite

Date: October 11th, 2024 4:34 PM
Author: fishy flirting nowag church building

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: gaped field corn cake

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: Aphrodisiac ruby alpha turdskin

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: gaped field corn cake



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



Reply Favorite

Date: October 11th, 2024 4:40 PM
Author: Carnelian School Cafeteria

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: Erotic insanely creepy trailer park faggotry

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: ungodly flatulent giraffe

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: Carnelian School Cafeteria

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: green toaster



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



Reply Favorite

Date: October 11th, 2024 7:50 PM
Author: Carnelian School Cafeteria

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: Vigorous Self-absorbed Dopamine Shrine

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: Dashing Ratface Menage

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: fishy flirting nowag church building

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: Racy Frozen Office



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



Reply Favorite

Date: December 23rd, 2025 2:58 AM
Author: chest-beating fat ankles orchestra pit

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: ungodly flatulent giraffe

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: Dashing Ratface Menage

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: vermilion sex offender



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



Reply Favorite

Date: October 11th, 2024 4:48 PM
Author: insane impressive feces

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: Crimson casino striped hyena

(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: awkward contagious temple

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: dark ticket booth masturbator

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: insane impressive feces



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



Reply Favorite

Date: October 12th, 2024 3:45 PM
Author: fishy flirting nowag church building

Wtf

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



Reply Favorite

Date: October 12th, 2024 5:01 PM
Author: awkward contagious temple

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: Aphrodisiac ruby alpha turdskin



(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: brindle hissy fit boiling water

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: vermilion sex offender



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



Reply Favorite

Date: October 12th, 2024 11:44 AM
Author: dark ticket booth masturbator

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: Titillating lodge

180

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



Reply Favorite

Date: October 12th, 2024 11:48 AM
Author: Pearly spot



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



Reply Favorite

Date: October 12th, 2024 3:17 PM
Author: exhilarant chocolate headpube

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: bistre stage

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: Pearly spot



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



Reply Favorite

Date: October 12th, 2024 3:34 PM
Author: bistre stage

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: Pearly spot



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



Reply Favorite

Date: October 13th, 2024 12:04 AM
Author: bistre stage

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: Comical famous landscape painting

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: french fanboi hairy legs

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: Spectacular drab parlour twinkling uncleanness



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



Reply Favorite

Date: November 30th, 2025 4:48 PM
Author: vermilion sex offender



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



Reply Favorite

Date: December 23rd, 2025 2:34 AM
Author: Spectacular drab parlour twinkling uncleanness



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



Reply Favorite

Date: December 23rd, 2025 2:46 AM
Author: green toaster



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



Reply Favorite

Date: December 23rd, 2025 6:43 AM
Author: laughsome public bath



(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: Copper Mildly Autistic Rehab Filthpig

yes

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



Reply Favorite

Date: October 12th, 2024 4:02 PM
Author: fishy flirting nowag church building

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: Maniacal philosopher-king

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: twinkling razzle-dazzle dysfunction kitty

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)