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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?
Obsidian stirring double fault
  10/11/24
I dunno. What if she has a nice ass?
beta wonderful party of the first part
  10/11/24
more detail plz
autistic offensive dopamine
  10/11/24
...
beta wonderful party of the first part
  10/11/24
It probably depends on how much you hate your bio parent and...
mentally impaired swashbuckling gaping
  10/11/24
do u know what a sister in law is?
Misunderstood hairy legs box office
  10/11/24
he's watched too much porn
Judgmental organic girlfriend
  10/11/24
Objection, nonresponsive
mentally impaired swashbuckling gaping
  10/11/24
...
erotic elite menage reading party
  12/23/25
I do but I prefer fantasizing about my non-existent step sis...
mentally impaired swashbuckling gaping
  10/11/24
Not sure if this analysis is on point. The less it's justifi...
lavender mother
  10/11/24
sleeping with anyone within your orbit of friends & fami...
Sienna yapping meetinghouse
  10/11/24
mostly cr
Obsidian stirring double fault
  10/11/24
...
topaz space
  10/12/24
this is exactly why I never sleep with my wife
purple spectacular corner
  12/23/25
depends on if your wife is dead or not
Judgmental organic girlfriend
  10/11/24
i believe this is colloquially known as "the biden rule...
Sienna yapping meetinghouse
  10/11/24
...
mahogany bateful plaza mediation
  11/30/25
only if you don't take pictures to share with us
bipolar stage faggotry
  10/11/24
(martin brodeur)
Chestnut parlour pistol
  10/11/24
Anyone who doesn't at least understand the temptation doesn'...
Hilarious green kitty fortuitous meteor
  10/12/24
This. Plus they are always hugging and kissing you.
Soul-stirring Saffron Son Of Senegal Business Firm
  10/12/24
...
bipolar stage faggotry
  12/23/25
Wtf
Obsidian stirring double fault
  10/12/24
This is my life. Constant blue balls.
Hilarious green kitty fortuitous meteor
  10/12/24
...
autistic offensive dopamine
  11/30/25
i'm married to the younger hotter sister, and the temptation...
...,,..;...,,..,..,...,,,;..,
  06/03/26
Is she a spicy Latina?
Spruce Bawdyhouse
  10/12/24
...
mahogany bateful plaza mediation
  11/30/25
Youngest SiL is trim, has a 180 ass and is always kissing me...
Soul-stirring Saffron Son Of Senegal Business Firm
  10/12/24
180
greedy toilet seat
  10/12/24
...
ultramarine dragon
  10/12/24
twist: the sil was Catherine of aragorn
Pungent Dog Poop
  10/12/24
If first brother was childless then this is classic Levirate...
embarrassed to the bone charismatic forum
  10/12/24
...
ultramarine dragon
  10/12/24
He's literally the closest replacement for the guy. I can't ...
embarrassed to the bone charismatic forum
  10/12/24
...
ultramarine dragon
  10/12/24
You're doing it for the purpose of having children, through ...
embarrassed to the bone charismatic forum
  10/13/24
are we talking about your wife's sister or your brother's wi...
brilliant love of her life degenerate
  10/12/24
How many times do we have to go over this.
magical dingle berry boistinker
  10/12/24
...
concupiscible trailer park
  10/12/24
...
mahogany bateful plaza mediation
  11/30/25
...
concupiscible trailer park
  12/23/25
...
erotic elite menage reading party
  12/23/25
...
Marvelous Theater Affirmative Action
  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
jade legal warrant
  10/12/24
voice of reason as always cbtp
Obsidian stirring double fault
  10/12/24
not as deranged as brother-in-law
Rambunctious weed whacker
  10/12/24
Wife’s sister or your bros wife = deranged wife&rsq...
maniacal public bath people who are hurt
  12/23/25


Poast new message in this thread



Reply Favorite

Date: October 11th, 2024 4:34 PM
Author: Obsidian stirring double fault

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: beta wonderful party of the first part

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: autistic offensive dopamine

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: beta wonderful party of the first part



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



Reply Favorite

Date: October 11th, 2024 4:40 PM
Author: mentally impaired swashbuckling gaping

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: Misunderstood hairy legs box office

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: Judgmental organic girlfriend

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: mentally impaired swashbuckling gaping

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: erotic elite menage reading party



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



Reply Favorite

Date: October 11th, 2024 7:50 PM
Author: mentally impaired swashbuckling gaping

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: lavender mother

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: Sienna yapping meetinghouse

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: Obsidian stirring double fault

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: topaz space



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



Reply Favorite

Date: December 23rd, 2025 2:58 AM
Author: purple spectacular corner

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: Judgmental organic girlfriend

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: Sienna yapping meetinghouse

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: mahogany bateful plaza mediation



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



Reply Favorite

Date: October 11th, 2024 4:48 PM
Author: bipolar stage faggotry

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: Chestnut parlour pistol

(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: Hilarious green kitty fortuitous meteor

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: Soul-stirring Saffron Son Of Senegal Business Firm

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: bipolar stage faggotry



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



Reply Favorite

Date: October 12th, 2024 3:45 PM
Author: Obsidian stirring double fault

Wtf

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



Reply Favorite

Date: October 12th, 2024 5:01 PM
Author: Hilarious green kitty fortuitous meteor

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: autistic offensive dopamine



(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: Spruce Bawdyhouse

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: mahogany bateful plaza mediation



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



Reply Favorite

Date: October 12th, 2024 11:44 AM
Author: Soul-stirring Saffron Son Of Senegal Business Firm

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: greedy toilet seat

180

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



Reply Favorite

Date: October 12th, 2024 11:48 AM
Author: ultramarine dragon



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



Reply Favorite

Date: October 12th, 2024 3:17 PM
Author: Pungent Dog Poop

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: embarrassed to the bone charismatic forum

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: ultramarine dragon



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



Reply Favorite

Date: October 12th, 2024 3:34 PM
Author: embarrassed to the bone charismatic forum

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: ultramarine dragon



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



Reply Favorite

Date: October 13th, 2024 12:04 AM
Author: embarrassed to the bone charismatic forum

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: brilliant love of her life degenerate

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: magical dingle berry boistinker

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: concupiscible trailer park



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



Reply Favorite

Date: November 30th, 2025 4:48 PM
Author: mahogany bateful plaza mediation



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



Reply Favorite

Date: December 23rd, 2025 2:34 AM
Author: concupiscible trailer park



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



Reply Favorite

Date: December 23rd, 2025 2:46 AM
Author: erotic elite menage reading party



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



Reply Favorite

Date: December 23rd, 2025 6:43 AM
Author: Marvelous Theater Affirmative Action



(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: jade legal warrant

yes

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



Reply Favorite

Date: October 12th, 2024 4:02 PM
Author: Obsidian stirring double fault

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: Rambunctious weed whacker

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: maniacal public bath people who are hurt

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)