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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?
hairraiser whorehouse stain
  10/11/24
I dunno. What if she has a nice ass?
Crimson Well-lubricated Codepig Garrison
  10/11/24
more detail plz
cobalt hot trump supporter
  10/11/24
...
Crimson Well-lubricated Codepig Garrison
  10/11/24
It probably depends on how much you hate your bio parent and...
Charismatic hissy fit
  10/11/24
do u know what a sister in law is?
Razzle-dazzle Pearly Field
  10/11/24
he's watched too much porn
unhinged aromatic karate
  10/11/24
Objection, nonresponsive
Charismatic hissy fit
  10/11/24
...
offensive temple
  12/23/25
I do but I prefer fantasizing about my non-existent step sis...
Charismatic hissy fit
  10/11/24
Not sure if this analysis is on point. The less it's justifi...
racy snowy stead
  10/11/24
sleeping with anyone within your orbit of friends & fami...
lemon headpube
  10/11/24
mostly cr
hairraiser whorehouse stain
  10/11/24
...
Drab haunting abode
  10/12/24
this is exactly why I never sleep with my wife
shivering boiling water
  12/23/25
depends on if your wife is dead or not
unhinged aromatic karate
  10/11/24
i believe this is colloquially known as "the biden rule...
lemon headpube
  10/11/24
...
Iridescent aphrodisiac hall
  11/30/25
only if you don't take pictures to share with us
bat-shit-crazy brass property
  10/11/24
(martin brodeur)
Laughsome Dun Trailer Park
  10/11/24
Anyone who doesn't at least understand the temptation doesn'...
saffron overrated public bath
  10/12/24
This. Plus they are always hugging and kissing you.
alcoholic tan nursing home
  10/12/24
...
bat-shit-crazy brass property
  12/23/25
Wtf
hairraiser whorehouse stain
  10/12/24
This is my life. Constant blue balls.
saffron overrated public bath
  10/12/24
...
cobalt hot trump supporter
  11/30/25
i'm married to the younger hotter sister, and the temptation...
...,,..;...,,..,..,...,,,;..,
  06/03/26
Is she a spicy Latina?
razzmatazz burgundy business firm
  10/12/24
...
Iridescent aphrodisiac hall
  11/30/25
Youngest SiL is trim, has a 180 ass and is always kissing me...
alcoholic tan nursing home
  10/12/24
180
Brindle Exciting Sneaky Criminal
  10/12/24
...
Histrionic Potus Mad Cow Disease
  10/12/24
twist: the sil was Catherine of aragorn
vibrant dysfunction sandwich
  10/12/24
If first brother was childless then this is classic Levirate...
Henna Appetizing Den Quadroon
  10/12/24
...
Histrionic Potus Mad Cow Disease
  10/12/24
He's literally the closest replacement for the guy. I can't ...
Henna Appetizing Den Quadroon
  10/12/24
...
Histrionic Potus Mad Cow Disease
  10/12/24
You're doing it for the purpose of having children, through ...
Henna Appetizing Den Quadroon
  10/13/24
are we talking about your wife's sister or your brother's wi...
Chartreuse Stage
  10/12/24
How many times do we have to go over this.
lake circlehead
  10/12/24
...
Galvanic copper plaza laser beams
  10/12/24
...
Iridescent aphrodisiac hall
  11/30/25
...
Galvanic copper plaza laser beams
  12/23/25
...
offensive temple
  12/23/25
...
talented dog poop
  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
mauve bearded indian lodge clown
  10/12/24
voice of reason as always cbtp
hairraiser whorehouse stain
  10/12/24
not as deranged as brother-in-law
Startled provocative resort
  10/12/24
Wife’s sister or your bros wife = deranged wife&rsq...
buff 180 round eye
  12/23/25


Poast new message in this thread



Reply Favorite

Date: October 11th, 2024 4:34 PM
Author: hairraiser whorehouse stain

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: Crimson Well-lubricated Codepig Garrison

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: cobalt hot trump supporter

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: Crimson Well-lubricated Codepig Garrison



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



Reply Favorite

Date: October 11th, 2024 4:40 PM
Author: Charismatic hissy fit

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: Razzle-dazzle Pearly Field

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: unhinged aromatic karate

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: Charismatic hissy fit

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: offensive temple



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



Reply Favorite

Date: October 11th, 2024 7:50 PM
Author: Charismatic hissy fit

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 snowy stead

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: lemon headpube

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: hairraiser whorehouse stain

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: Drab haunting abode



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



Reply Favorite

Date: December 23rd, 2025 2:58 AM
Author: shivering boiling water

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: unhinged aromatic karate

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: lemon headpube

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: Iridescent aphrodisiac hall



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



Reply Favorite

Date: October 11th, 2024 4:48 PM
Author: bat-shit-crazy brass property

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: Laughsome Dun Trailer Park

(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: saffron overrated public bath

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: alcoholic tan nursing home

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: bat-shit-crazy brass property



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



Reply Favorite

Date: October 12th, 2024 3:45 PM
Author: hairraiser whorehouse stain

Wtf

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



Reply Favorite

Date: October 12th, 2024 5:01 PM
Author: saffron overrated public bath

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: cobalt hot trump supporter



(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: razzmatazz burgundy business firm

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: Iridescent aphrodisiac hall



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



Reply Favorite

Date: October 12th, 2024 11:44 AM
Author: alcoholic tan nursing home

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: Brindle Exciting Sneaky Criminal

180

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



Reply Favorite

Date: October 12th, 2024 11:48 AM
Author: Histrionic Potus Mad Cow Disease



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



Reply Favorite

Date: October 12th, 2024 3:17 PM
Author: vibrant dysfunction sandwich

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: Henna Appetizing Den Quadroon

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: Histrionic Potus Mad Cow Disease



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



Reply Favorite

Date: October 12th, 2024 3:34 PM
Author: Henna Appetizing Den Quadroon

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: Histrionic Potus Mad Cow Disease



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



Reply Favorite

Date: October 13th, 2024 12:04 AM
Author: Henna Appetizing Den Quadroon

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: Chartreuse Stage

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: lake circlehead

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: Galvanic copper plaza laser beams



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



Reply Favorite

Date: November 30th, 2025 4:48 PM
Author: Iridescent aphrodisiac hall



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



Reply Favorite

Date: December 23rd, 2025 2:34 AM
Author: Galvanic copper plaza laser beams



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



Reply Favorite

Date: December 23rd, 2025 2:46 AM
Author: offensive temple



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



Reply Favorite

Date: December 23rd, 2025 6:43 AM
Author: talented dog poop



(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: mauve bearded indian lodge clown

yes

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



Reply Favorite

Date: October 12th, 2024 4:02 PM
Author: hairraiser whorehouse stain

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: Startled provocative resort

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: buff 180 round eye

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)