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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?
Twinkling Flirting School Trust Fund
  10/11/24
I dunno. What if she has a nice ass?
Slap-happy orchestra pit
  10/11/24
more detail plz
doobsian stage giraffe
  10/11/24
...
Slap-happy orchestra pit
  10/11/24
It probably depends on how much you hate your bio parent and...
trip fanboi fat ankles
  10/11/24
do u know what a sister in law is?
shimmering senate knife
  10/11/24
he's watched too much porn
yellow motley parlour really tough guy
  10/11/24
Objection, nonresponsive
trip fanboi fat ankles
  10/11/24
...
Glittery mewling coldplay fan
  12/23/25
I do but I prefer fantasizing about my non-existent step sis...
trip fanboi fat ankles
  10/11/24
Not sure if this analysis is on point. The less it's justifi...
Blue abusive friendly grandma bawdyhouse
  10/11/24
sleeping with anyone within your orbit of friends & fami...
orange sadistic pistol
  10/11/24
mostly cr
Twinkling Flirting School Trust Fund
  10/11/24
...
Violet Medicated Gaping Garrison
  10/12/24
this is exactly why I never sleep with my wife
Cruel-hearted Spot Telephone
  12/23/25
depends on if your wife is dead or not
yellow motley parlour really tough guy
  10/11/24
i believe this is colloquially known as "the biden rule...
orange sadistic pistol
  10/11/24
...
galvanic snowy house
  11/30/25
only if you don't take pictures to share with us
Bistre mind-boggling rehab kitty cat
  10/11/24
(martin brodeur)
salmon sick church building puppy
  10/11/24
Anyone who doesn't at least understand the temptation doesn'...
frisky love of her life
  10/12/24
This. Plus they are always hugging and kissing you.
Frum National Deer Antler
  10/12/24
...
Bistre mind-boggling rehab kitty cat
  12/23/25
Wtf
Twinkling Flirting School Trust Fund
  10/12/24
This is my life. Constant blue balls.
frisky love of her life
  10/12/24
...
doobsian stage giraffe
  11/30/25
i'm married to the younger hotter sister, and the temptation...
...,,..;...,,..,..,...,,,;..,
  06/03/26
Is she a spicy Latina?
laughsome adulterous legal warrant center
  10/12/24
...
galvanic snowy house
  11/30/25
Youngest SiL is trim, has a 180 ass and is always kissing me...
Frum National Deer Antler
  10/12/24
180
fuchsia well-lubricated idiot
  10/12/24
...
mentally impaired irradiated mad cow disease
  10/12/24
twist: the sil was Catherine of aragorn
wild godawful ratface hunting ground
  10/12/24
If first brother was childless then this is classic Levirate...
sienna stirring twinkling uncleanness ticket booth
  10/12/24
...
mentally impaired irradiated mad cow disease
  10/12/24
He's literally the closest replacement for the guy. I can't ...
sienna stirring twinkling uncleanness ticket booth
  10/12/24
...
mentally impaired irradiated mad cow disease
  10/12/24
You're doing it for the purpose of having children, through ...
sienna stirring twinkling uncleanness ticket booth
  10/13/24
are we talking about your wife's sister or your brother's wi...
French Native
  10/12/24
How many times do we have to go over this.
Hateful feces
  10/12/24
...
cowardly zombie-like cumskin bbw
  10/12/24
...
galvanic snowy house
  11/30/25
...
cowardly zombie-like cumskin bbw
  12/23/25
...
Glittery mewling coldplay fan
  12/23/25
...
180 gas station death wish
  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
cordovan high-end new version theatre
  10/12/24
voice of reason as always cbtp
Twinkling Flirting School Trust Fund
  10/12/24
not as deranged as brother-in-law
Carnelian striped hyena
  10/12/24
Wife’s sister or your bros wife = deranged wife&rsq...
abnormal institution hissy fit
  12/23/25


Poast new message in this thread



Reply Favorite

Date: October 11th, 2024 4:34 PM
Author: Twinkling Flirting School Trust Fund

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

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



Reply Favorite

Date: October 11th, 2024 4:34 PM
Author: Slap-happy orchestra pit

I dunno. What if she has a nice ass?

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



Reply Favorite

Date: October 11th, 2024 4:35 PM
Author: doobsian stage giraffe

more detail plz

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



Reply Favorite

Date: October 11th, 2024 4:37 PM
Author: Slap-happy orchestra pit



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



Reply Favorite

Date: October 11th, 2024 4:40 PM
Author: trip fanboi fat ankles

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=2most#48188001)



Reply Favorite

Date: October 11th, 2024 4:41 PM
Author: shimmering senate knife

do u know what a sister in law is?

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



Reply Favorite

Date: October 11th, 2024 4:44 PM
Author: yellow motley parlour really tough guy

he's watched too much porn

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



Reply Favorite

Date: October 11th, 2024 7:51 PM
Author: trip fanboi fat ankles

Objection, nonresponsive

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



Reply Favorite

Date: December 23rd, 2025 2:44 AM
Author: Glittery mewling coldplay fan



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



Reply Favorite

Date: October 11th, 2024 7:50 PM
Author: trip fanboi fat ankles

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=2most#48188616)



Reply Favorite

Date: October 11th, 2024 8:22 PM
Author: Blue abusive friendly grandma bawdyhouse

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=2most#48188745)



Reply Favorite

Date: October 11th, 2024 4:42 PM
Author: orange sadistic pistol

sleeping with anyone within your orbit of friends & family is insane and doomed

(http://www.autoadmit.com/thread.php?thread_id=5610171&forum_id=2most#48188009)



Reply Favorite

Date: October 11th, 2024 4:50 PM
Author: Twinkling Flirting School Trust Fund

mostly cr

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



Reply Favorite

Date: October 12th, 2024 3:21 PM
Author: Violet Medicated Gaping Garrison



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



Reply Favorite

Date: December 23rd, 2025 2:58 AM
Author: Cruel-hearted Spot Telephone

this is exactly why I never sleep with my wife

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



Reply Favorite

Date: October 11th, 2024 4:44 PM
Author: yellow motley parlour really tough guy

depends on if your wife is dead or not

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



Reply Favorite

Date: October 11th, 2024 4:44 PM
Author: orange sadistic pistol

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

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



Reply Favorite

Date: November 30th, 2025 4:48 PM
Author: galvanic snowy house



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



Reply Favorite

Date: October 11th, 2024 4:48 PM
Author: Bistre mind-boggling rehab kitty cat

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

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



Reply Favorite

Date: October 11th, 2024 8:14 PM
Author: salmon sick church building puppy

(martin brodeur)

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



Reply Favorite

Date: October 12th, 2024 10:56 AM
Author: frisky love of her life

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=2most#48189844)



Reply Favorite

Date: October 12th, 2024 11:38 AM
Author: Frum National Deer Antler

This. Plus they are always hugging and kissing you.

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



Reply Favorite

Date: December 23rd, 2025 6:52 AM
Author: Bistre mind-boggling rehab kitty cat



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



Reply Favorite

Date: October 12th, 2024 3:45 PM
Author: Twinkling Flirting School Trust Fund

Wtf

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



Reply Favorite

Date: October 12th, 2024 5:01 PM
Author: frisky love of her life

This is my life. Constant blue balls.

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



Reply Favorite

Date: November 30th, 2025 4:44 PM
Author: doobsian stage giraffe



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



Reply Favorite

Date: October 12th, 2024 11:41 AM
Author: laughsome adulterous legal warrant center

Is she a spicy Latina?

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



Reply Favorite

Date: November 30th, 2025 4:48 PM
Author: galvanic snowy house



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



Reply Favorite

Date: October 12th, 2024 11:44 AM
Author: Frum National Deer Antler

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=2most#48189964)



Reply Favorite

Date: October 12th, 2024 3:45 PM
Author: fuchsia well-lubricated idiot

180

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



Reply Favorite

Date: October 12th, 2024 11:48 AM
Author: mentally impaired irradiated mad cow disease



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



Reply Favorite

Date: October 12th, 2024 3:17 PM
Author: wild godawful ratface hunting ground

twist: the sil was Catherine of aragorn

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



Reply Favorite

Date: October 12th, 2024 3:20 PM
Author: sienna stirring twinkling uncleanness ticket booth

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=2most#48190659)



Reply Favorite

Date: October 12th, 2024 3:25 PM
Author: mentally impaired irradiated mad cow disease



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



Reply Favorite

Date: October 12th, 2024 3:34 PM
Author: sienna stirring twinkling uncleanness ticket booth

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=2most#48190707)



Reply Favorite

Date: October 12th, 2024 3:38 PM
Author: mentally impaired irradiated mad cow disease



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



Reply Favorite

Date: October 13th, 2024 12:04 AM
Author: sienna stirring twinkling uncleanness ticket booth

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=2most#48191875)



Reply Favorite

Date: October 12th, 2024 11:50 AM
Author: French Native

are we talking about your wife's sister or your brother's wife?

(http://www.autoadmit.com/thread.php?thread_id=5610171&forum_id=2most#48189984)



Reply Favorite

Date: October 12th, 2024 11:52 AM
Author: Hateful feces

How many times do we have to go over this.

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



Reply Favorite

Date: October 12th, 2024 4:01 PM
Author: cowardly zombie-like cumskin bbw



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



Reply Favorite

Date: November 30th, 2025 4:48 PM
Author: galvanic snowy house



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



Reply Favorite

Date: December 23rd, 2025 2:34 AM
Author: cowardly zombie-like cumskin bbw



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



Reply Favorite

Date: December 23rd, 2025 2:46 AM
Author: Glittery mewling coldplay fan



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



Reply Favorite

Date: December 23rd, 2025 6:43 AM
Author: 180 gas station death wish



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



Reply Favorite

Date: June 3rd, 2026 3:03 PM
Author: gedood persoon



(http://www.autoadmit.com/thread.php?thread_id=5610171&forum_id=2most#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=2most#49913235)



Reply Favorite

Date: June 3rd, 2026 3:20 PM
Author: Mailer Daemon



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



Reply Favorite

Date: October 12th, 2024 11:51 AM
Author: cordovan high-end new version theatre

yes

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



Reply Favorite

Date: October 12th, 2024 4:02 PM
Author: Twinkling Flirting School Trust Fund

voice of reason as always cbtp

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



Reply Favorite

Date: October 12th, 2024 11:57 AM
Author: Carnelian striped hyena

not as deranged as brother-in-law

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



Reply Favorite

Date: December 23rd, 2025 7:03 AM
Author: abnormal institution hissy fit

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=2most#49533184)