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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?
clear brunch
  10/11/24
I dunno. What if she has a nice ass?
Flatulent concupiscible crackhouse lettuce
  10/11/24
more detail plz
Electric shimmering trump supporter
  10/11/24
...
Flatulent concupiscible crackhouse lettuce
  10/11/24
It probably depends on how much you hate your bio parent and...
confused church
  10/11/24
do u know what a sister in law is?
Flushed institution rigpig
  10/11/24
he's watched too much porn
Pearl Crotch
  10/11/24
Objection, nonresponsive
confused church
  10/11/24
...
Amethyst Tripping Kitchen Athletic Conference
  12/23/25
I do but I prefer fantasizing about my non-existent step sis...
confused church
  10/11/24
Not sure if this analysis is on point. The less it's justifi...
180 pit really tough guy
  10/11/24
sleeping with anyone within your orbit of friends & fami...
Azure Jewess Organic Girlfriend
  10/11/24
mostly cr
clear brunch
  10/11/24
...
provocative bronze juggernaut
  10/12/24
this is exactly why I never sleep with my wife
big dilemma
  12/23/25
depends on if your wife is dead or not
Pearl Crotch
  10/11/24
i believe this is colloquially known as "the biden rule...
Azure Jewess Organic Girlfriend
  10/11/24
...
plum very tactful school cafeteria
  11/30/25
only if you don't take pictures to share with us
snowy police squad site
  10/11/24
(martin brodeur)
shivering smoky background story tanning salon
  10/11/24
Anyone who doesn't at least understand the temptation doesn'...
Curious french chef water buffalo
  10/12/24
This. Plus they are always hugging and kissing you.
Orange beady-eyed ceo
  10/12/24
...
snowy police squad site
  12/23/25
Wtf
clear brunch
  10/12/24
This is my life. Constant blue balls.
Curious french chef water buffalo
  10/12/24
...
Electric shimmering trump supporter
  11/30/25
i'm married to the younger hotter sister, and the temptation...
...,,..;...,,..,..,...,,,;..,
  06/03/26
Is she a spicy Latina?
Umber idiot becky
  10/12/24
...
plum very tactful school cafeteria
  11/30/25
Youngest SiL is trim, has a 180 ass and is always kissing me...
Orange beady-eyed ceo
  10/12/24
180
turquoise bateful hospital useless brakes
  10/12/24
...
Stimulating brethren theater stage
  10/12/24
twist: the sil was Catherine of aragorn
at-the-ready swashbuckling mediation
  10/12/24
If first brother was childless then this is classic Levirate...
Cerise kitty cat death wish
  10/12/24
...
Stimulating brethren theater stage
  10/12/24
He's literally the closest replacement for the guy. I can't ...
Cerise kitty cat death wish
  10/12/24
...
Stimulating brethren theater stage
  10/12/24
You're doing it for the purpose of having children, through ...
Cerise kitty cat death wish
  10/13/24
are we talking about your wife's sister or your brother's wi...
dashing native
  10/12/24
How many times do we have to go over this.
histrionic base
  10/12/24
...
Effete corner private investor
  10/12/24
...
plum very tactful school cafeteria
  11/30/25
...
Effete corner private investor
  12/23/25
...
Amethyst Tripping Kitchen Athletic Conference
  12/23/25
...
Fuchsia rehab windowlicker
  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
abnormal stage
  10/12/24
voice of reason as always cbtp
clear brunch
  10/12/24
not as deranged as brother-in-law
sick famous landscape painting
  10/12/24
Wife’s sister or your bros wife = deranged wife&rsq...
Citrine galvanic piazza toilet seat
  12/23/25


Poast new message in this thread



Reply Favorite

Date: October 11th, 2024 4:34 PM
Author: clear brunch

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: Flatulent concupiscible crackhouse lettuce

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: Electric shimmering trump supporter

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: Flatulent concupiscible crackhouse lettuce



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



Reply Favorite

Date: October 11th, 2024 4:40 PM
Author: confused church

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: Flushed institution rigpig

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: Pearl Crotch

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: confused church

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: Amethyst Tripping Kitchen Athletic Conference



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



Reply Favorite

Date: October 11th, 2024 7:50 PM
Author: confused church

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: 180 pit really tough guy

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: Azure Jewess Organic Girlfriend

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: clear brunch

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: provocative bronze juggernaut



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



Reply Favorite

Date: December 23rd, 2025 2:58 AM
Author: big dilemma

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: Pearl Crotch

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: Azure Jewess Organic Girlfriend

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: plum very tactful school cafeteria



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



Reply Favorite

Date: October 11th, 2024 4:48 PM
Author: snowy police squad site

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: shivering smoky background story tanning salon

(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: Curious french chef water buffalo

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: Orange beady-eyed ceo

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: snowy police squad site



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



Reply Favorite

Date: October 12th, 2024 3:45 PM
Author: clear brunch

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: Curious french chef water buffalo

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: Electric shimmering trump supporter



(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: Umber idiot becky

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: plum very tactful school cafeteria



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



Reply Favorite

Date: October 12th, 2024 11:44 AM
Author: Orange beady-eyed ceo

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: turquoise bateful hospital useless brakes

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: Stimulating brethren theater stage



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



Reply Favorite

Date: October 12th, 2024 3:17 PM
Author: at-the-ready swashbuckling mediation

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: Cerise kitty cat death wish

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: Stimulating brethren theater stage



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



Reply Favorite

Date: October 12th, 2024 3:34 PM
Author: Cerise kitty cat death wish

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: Stimulating brethren theater stage



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



Reply Favorite

Date: October 13th, 2024 12:04 AM
Author: Cerise kitty cat death wish

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: dashing 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=2…id#48189984)



Reply Favorite

Date: October 12th, 2024 11:52 AM
Author: histrionic base

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: Effete corner private investor



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



Reply Favorite

Date: November 30th, 2025 4:48 PM
Author: plum very tactful school cafeteria



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



Reply Favorite

Date: December 23rd, 2025 2:34 AM
Author: Effete corner private investor



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



Reply Favorite

Date: December 23rd, 2025 2:46 AM
Author: Amethyst Tripping Kitchen Athletic Conference



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



Reply Favorite

Date: December 23rd, 2025 6:43 AM
Author: Fuchsia rehab windowlicker



(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: abnormal stage

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: clear brunch

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: sick famous landscape painting

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: Citrine galvanic piazza toilet seat

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)