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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?
Filthy mad cow disease
  10/11/24
I dunno. What if she has a nice ass?
Honey-headed Nighttime Stain Tank
  10/11/24
more detail plz
stimulating self-absorbed pit
  10/11/24
...
Honey-headed Nighttime Stain Tank
  10/11/24
It probably depends on how much you hate your bio parent and...
onyx histrionic mental disorder
  10/11/24
do u know what a sister in law is?
Bronze university mood
  10/11/24
he's watched too much porn
mewling blood rage
  10/11/24
Objection, nonresponsive
onyx histrionic mental disorder
  10/11/24
...
confused yapping nibblets casino
  12/23/25
I do but I prefer fantasizing about my non-existent step sis...
onyx histrionic mental disorder
  10/11/24
Not sure if this analysis is on point. The less it's justifi...
deep hot address giraffe
  10/11/24
sleeping with anyone within your orbit of friends & fami...
snowy violent pozpig
  10/11/24
mostly cr
Filthy mad cow disease
  10/11/24
...
Supple nowag
  10/12/24
this is exactly why I never sleep with my wife
at-the-ready floppy round eye orchestra pit
  12/23/25
depends on if your wife is dead or not
mewling blood rage
  10/11/24
i believe this is colloquially known as "the biden rule...
snowy violent pozpig
  10/11/24
...
Carmine Office Prole
  11/30/25
only if you don't take pictures to share with us
big bipolar famous landscape painting
  10/11/24
(martin brodeur)
Tan box office roast beef
  10/11/24
Anyone who doesn't at least understand the temptation doesn'...
bateful nudist temple idea he suggested
  10/12/24
This. Plus they are always hugging and kissing you.
sienna vengeful base haunted graveyard
  10/12/24
...
big bipolar famous landscape painting
  12/23/25
Wtf
Filthy mad cow disease
  10/12/24
This is my life. Constant blue balls.
bateful nudist temple idea he suggested
  10/12/24
...
stimulating self-absorbed pit
  11/30/25
i'm married to the younger hotter sister, and the temptation...
...,,..;...,,..,..,...,,,;..,
  06/03/26
Is she a spicy Latina?
Wild free-loading piazza rigor
  10/12/24
...
Carmine Office Prole
  11/30/25
Youngest SiL is trim, has a 180 ass and is always kissing me...
sienna vengeful base haunted graveyard
  10/12/24
180
coral concupiscible athletic conference space
  10/12/24
...
shivering trailer park
  10/12/24
twist: the sil was Catherine of aragorn
Purple Liquid Oxygen Stock Car
  10/12/24
If first brother was childless then this is classic Levirate...
violet hospital
  10/12/24
...
shivering trailer park
  10/12/24
He's literally the closest replacement for the guy. I can't ...
violet hospital
  10/12/24
...
shivering trailer park
  10/12/24
You're doing it for the purpose of having children, through ...
violet hospital
  10/13/24
are we talking about your wife's sister or your brother's wi...
Flesh Nursing Home
  10/12/24
How many times do we have to go over this.
vermilion vivacious brunch
  10/12/24
...
Crusty exhilarant feces
  10/12/24
...
Carmine Office Prole
  11/30/25
...
Crusty exhilarant feces
  12/23/25
...
confused yapping nibblets casino
  12/23/25
...
Spectacular french chef whorehouse
  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
Useless institution trust fund
  10/12/24
voice of reason as always cbtp
Filthy mad cow disease
  10/12/24
not as deranged as brother-in-law
milky mad-dog skullcap cumskin
  10/12/24
Wife’s sister or your bros wife = deranged wife&rsq...
mint medicated school scourge upon the earth
  12/23/25


Poast new message in this thread



Reply Favorite

Date: October 11th, 2024 4:34 PM
Author: Filthy mad cow disease

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

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



Reply Favorite

Date: October 11th, 2024 4:34 PM
Author: Honey-headed Nighttime Stain Tank

I dunno. What if she has a nice ass?

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



Reply Favorite

Date: October 11th, 2024 4:35 PM
Author: stimulating self-absorbed pit

more detail plz

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



Reply Favorite

Date: October 11th, 2024 4:37 PM
Author: Honey-headed Nighttime Stain Tank



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



Reply Favorite

Date: October 11th, 2024 4:40 PM
Author: onyx histrionic mental disorder

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…id#48188001)



Reply Favorite

Date: October 11th, 2024 4:41 PM
Author: Bronze university mood

do u know what a sister in law is?

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



Reply Favorite

Date: October 11th, 2024 4:44 PM
Author: mewling blood rage

he's watched too much porn

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



Reply Favorite

Date: October 11th, 2024 7:51 PM
Author: onyx histrionic mental disorder

Objection, nonresponsive

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



Reply Favorite

Date: December 23rd, 2025 2:44 AM
Author: confused yapping nibblets casino



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



Reply Favorite

Date: October 11th, 2024 7:50 PM
Author: onyx histrionic mental disorder

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…id#48188616)



Reply Favorite

Date: October 11th, 2024 8:22 PM
Author: deep hot address giraffe

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…id#48188745)



Reply Favorite

Date: October 11th, 2024 4:42 PM
Author: snowy violent pozpig

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…id#48188009)



Reply Favorite

Date: October 11th, 2024 4:50 PM
Author: Filthy mad cow disease

mostly cr

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



Reply Favorite

Date: October 12th, 2024 3:21 PM
Author: Supple nowag



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



Reply Favorite

Date: December 23rd, 2025 2:58 AM
Author: at-the-ready floppy round eye orchestra pit

this is exactly why I never sleep with my wife

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



Reply Favorite

Date: October 11th, 2024 4:44 PM
Author: mewling blood rage

depends on if your wife is dead or not

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



Reply Favorite

Date: October 11th, 2024 4:44 PM
Author: snowy violent pozpig

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

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



Reply Favorite

Date: November 30th, 2025 4:48 PM
Author: Carmine Office Prole



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



Reply Favorite

Date: October 11th, 2024 4:48 PM
Author: big bipolar famous landscape painting

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

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



Reply Favorite

Date: October 11th, 2024 8:14 PM
Author: Tan box office roast beef

(martin brodeur)

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



Reply Favorite

Date: October 12th, 2024 10:56 AM
Author: bateful nudist temple idea he suggested

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…id#48189844)



Reply Favorite

Date: October 12th, 2024 11:38 AM
Author: sienna vengeful base haunted graveyard

This. Plus they are always hugging and kissing you.

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



Reply Favorite

Date: December 23rd, 2025 6:52 AM
Author: big bipolar famous landscape painting



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



Reply Favorite

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

Wtf

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



Reply Favorite

Date: October 12th, 2024 5:01 PM
Author: bateful nudist temple idea he suggested

This is my life. Constant blue balls.

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



Reply Favorite

Date: November 30th, 2025 4:44 PM
Author: stimulating self-absorbed pit



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



Reply Favorite

Date: October 12th, 2024 11:41 AM
Author: Wild free-loading piazza rigor

Is she a spicy Latina?

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



Reply Favorite

Date: November 30th, 2025 4:48 PM
Author: Carmine Office Prole



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



Reply Favorite

Date: October 12th, 2024 11:44 AM
Author: sienna vengeful base haunted graveyard

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…id#48189964)



Reply Favorite

Date: October 12th, 2024 3:45 PM
Author: coral concupiscible athletic conference space

180

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



Reply Favorite

Date: October 12th, 2024 11:48 AM
Author: shivering trailer park



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



Reply Favorite

Date: October 12th, 2024 3:17 PM
Author: Purple Liquid Oxygen Stock Car

twist: the sil was Catherine of aragorn

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



Reply Favorite

Date: October 12th, 2024 3:20 PM
Author: violet hospital

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…id#48190659)



Reply Favorite

Date: October 12th, 2024 3:25 PM
Author: shivering trailer park



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



Reply Favorite

Date: October 12th, 2024 3:34 PM
Author: violet hospital

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…id#48190707)



Reply Favorite

Date: October 12th, 2024 3:38 PM
Author: shivering trailer park



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



Reply Favorite

Date: October 13th, 2024 12:04 AM
Author: violet hospital

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…id#48191875)



Reply Favorite

Date: October 12th, 2024 11:50 AM
Author: Flesh Nursing Home

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…id#48189984)



Reply Favorite

Date: October 12th, 2024 11:52 AM
Author: vermilion vivacious brunch

How many times do we have to go over this.

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



Reply Favorite

Date: October 12th, 2024 4:01 PM
Author: Crusty exhilarant feces



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



Reply Favorite

Date: November 30th, 2025 4:48 PM
Author: Carmine Office Prole



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



Reply Favorite

Date: December 23rd, 2025 2:34 AM
Author: Crusty exhilarant feces



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



Reply Favorite

Date: December 23rd, 2025 2:46 AM
Author: confused yapping nibblets casino



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



Reply Favorite

Date: December 23rd, 2025 6:43 AM
Author: Spectacular french chef whorehouse



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



Reply Favorite

Date: October 12th, 2024 11:51 AM
Author: Useless institution trust fund

yes

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



Reply Favorite

Date: October 12th, 2024 4:02 PM
Author: Filthy mad cow disease

voice of reason as always cbtp

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



Reply Favorite

Date: October 12th, 2024 11:57 AM
Author: milky mad-dog skullcap cumskin

not as deranged as brother-in-law

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



Reply Favorite

Date: December 23rd, 2025 7:03 AM
Author: mint medicated school scourge upon the earth

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…id#49533184)