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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?
Underhanded Hall
  10/11/24
I dunno. What if she has a nice ass?
Heady Ratface Windowlicker
  10/11/24
more detail plz
Shivering iridescent theater
  10/11/24
...
Heady Ratface Windowlicker
  10/11/24
It probably depends on how much you hate your bio parent and...
Black toilet seat
  10/11/24
do u know what a sister in law is?
Mentally impaired dog poop
  10/11/24
he's watched too much porn
floppy church potus
  10/11/24
Objection, nonresponsive
Black toilet seat
  10/11/24
...
Disturbing boyish volcanic crater native
  12/23/25
I do but I prefer fantasizing about my non-existent step sis...
Black toilet seat
  10/11/24
Not sure if this analysis is on point. The less it's justifi...
racy crimson cruise ship
  10/11/24
sleeping with anyone within your orbit of friends & fami...
Grizzly sandwich
  10/11/24
mostly cr
Underhanded Hall
  10/11/24
...
violent glittery circlehead point
  10/12/24
this is exactly why I never sleep with my wife
Pea-brained Fluffy Public Bath Travel Guidebook
  12/23/25
depends on if your wife is dead or not
floppy church potus
  10/11/24
i believe this is colloquially known as "the biden rule...
Grizzly sandwich
  10/11/24
...
Trip Maroon Hairy Legs
  11/30/25
only if you don't take pictures to share with us
Twinkling free-loading ladyboy queen of the night
  10/11/24
(martin brodeur)
Motley lake hunting ground
  10/11/24
Anyone who doesn't at least understand the temptation doesn'...
well-lubricated up-to-no-good church building personal credit line
  10/12/24
This. Plus they are always hugging and kissing you.
bistre effete plaza mother
  10/12/24
...
Twinkling free-loading ladyboy queen of the night
  12/23/25
Wtf
Underhanded Hall
  10/12/24
This is my life. Constant blue balls.
well-lubricated up-to-no-good church building personal credit line
  10/12/24
...
Shivering iridescent theater
  11/30/25
i'm married to the younger hotter sister, and the temptation...
...,,..;...,,..,..,...,,,;..,
  06/03/26
Is she a spicy Latina?
laughsome kitchen
  10/12/24
...
Trip Maroon Hairy Legs
  11/30/25
Youngest SiL is trim, has a 180 ass and is always kissing me...
bistre effete plaza mother
  10/12/24
180
charismatic quadroon
  10/12/24
...
Judgmental box office son of senegal
  10/12/24
twist: the sil was Catherine of aragorn
Pearl Dead Blood Rage
  10/12/24
If first brother was childless then this is classic Levirate...
topaz house-broken toaster
  10/12/24
...
Judgmental box office son of senegal
  10/12/24
He's literally the closest replacement for the guy. I can't ...
topaz house-broken toaster
  10/12/24
...
Judgmental box office son of senegal
  10/12/24
You're doing it for the purpose of having children, through ...
topaz house-broken toaster
  10/13/24
are we talking about your wife's sister or your brother's wi...
self-absorbed senate gaming laptop
  10/12/24
How many times do we have to go over this.
bull headed green address
  10/12/24
...
Crawly Maize Fat Ankles
  10/12/24
...
Trip Maroon Hairy Legs
  11/30/25
...
Crawly Maize Fat Ankles
  12/23/25
...
Disturbing boyish volcanic crater native
  12/23/25
...
walnut odious hell alpha
  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
Vivacious police squad roommate
  10/12/24
voice of reason as always cbtp
Underhanded Hall
  10/12/24
not as deranged as brother-in-law
Provocative Lay
  10/12/24
Wife’s sister or your bros wife = deranged wife&rsq...
Vermilion confused meetinghouse boltzmann
  12/23/25


Poast new message in this thread



Reply Favorite

Date: October 11th, 2024 4:34 PM
Author: Underhanded Hall

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: Heady Ratface Windowlicker

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: Shivering iridescent theater

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: Heady Ratface Windowlicker



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



Reply Favorite

Date: October 11th, 2024 4:40 PM
Author: Black toilet seat

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: Mentally impaired dog poop

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: floppy church potus

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: Black toilet seat

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: Disturbing boyish volcanic crater native



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



Reply Favorite

Date: October 11th, 2024 7:50 PM
Author: Black toilet seat

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: racy crimson cruise ship

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: Grizzly sandwich

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: Underhanded Hall

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: violent glittery circlehead point



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



Reply Favorite

Date: December 23rd, 2025 2:58 AM
Author: Pea-brained Fluffy Public Bath Travel Guidebook

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: floppy church potus

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: Grizzly sandwich

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: Trip Maroon Hairy Legs



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



Reply Favorite

Date: October 11th, 2024 4:48 PM
Author: Twinkling free-loading ladyboy queen of the night

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: Motley lake hunting ground

(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: well-lubricated up-to-no-good church building personal credit line

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: bistre effete plaza mother

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: Twinkling free-loading ladyboy queen of the night



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



Reply Favorite

Date: October 12th, 2024 3:45 PM
Author: Underhanded Hall

Wtf

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



Reply Favorite

Date: October 12th, 2024 5:01 PM
Author: well-lubricated up-to-no-good church building personal credit line

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: Shivering iridescent theater



(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: laughsome kitchen

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: Trip Maroon Hairy Legs



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



Reply Favorite

Date: October 12th, 2024 11:44 AM
Author: bistre effete plaza mother

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: charismatic quadroon

180

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



Reply Favorite

Date: October 12th, 2024 11:48 AM
Author: Judgmental box office son of senegal



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



Reply Favorite

Date: October 12th, 2024 3:17 PM
Author: Pearl Dead Blood Rage

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: topaz house-broken toaster

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: Judgmental box office son of senegal



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



Reply Favorite

Date: October 12th, 2024 3:34 PM
Author: topaz house-broken toaster

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: Judgmental box office son of senegal



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



Reply Favorite

Date: October 13th, 2024 12:04 AM
Author: topaz house-broken toaster

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: self-absorbed senate gaming laptop

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: bull headed green address

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: Crawly Maize Fat Ankles



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



Reply Favorite

Date: November 30th, 2025 4:48 PM
Author: Trip Maroon Hairy Legs



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



Reply Favorite

Date: December 23rd, 2025 2:34 AM
Author: Crawly Maize Fat Ankles



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



Reply Favorite

Date: December 23rd, 2025 2:46 AM
Author: Disturbing boyish volcanic crater native



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



Reply Favorite

Date: December 23rd, 2025 6:43 AM
Author: walnut odious hell alpha



(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: Vivacious police squad roommate

yes

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



Reply Favorite

Date: October 12th, 2024 4:02 PM
Author: Underhanded Hall

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: Provocative Lay

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: Vermilion confused meetinghouse boltzmann

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)