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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?
purple hunting ground tattoo
  10/11/24
I dunno. What if she has a nice ass?
aphrodisiac bright pit affirmative action
  10/11/24
more detail plz
cheese-eating haunting coffee pot
  10/11/24
...
aphrodisiac bright pit affirmative action
  10/11/24
It probably depends on how much you hate your bio parent and...
black theatre
  10/11/24
do u know what a sister in law is?
Lake Spot Elastic Band
  10/11/24
he's watched too much porn
Ungodly Double Fault
  10/11/24
Objection, nonresponsive
black theatre
  10/11/24
...
high-end hospital
  12/23/25
I do but I prefer fantasizing about my non-existent step sis...
black theatre
  10/11/24
Not sure if this analysis is on point. The less it's justifi...
silver community account
  10/11/24
sleeping with anyone within your orbit of friends & fami...
Stirring forum athletic conference
  10/11/24
mostly cr
purple hunting ground tattoo
  10/11/24
...
Passionate home ladyboy
  10/12/24
this is exactly why I never sleep with my wife
fiercely-loyal rehab dingle berry
  12/23/25
depends on if your wife is dead or not
Ungodly Double Fault
  10/11/24
i believe this is colloquially known as "the biden rule...
Stirring forum athletic conference
  10/11/24
...
chrome cuckoldry
  11/30/25
only if you don't take pictures to share with us
Fuchsia exciting range
  10/11/24
(martin brodeur)
Fragrant temple goyim
  10/11/24
Anyone who doesn't at least understand the temptation doesn'...
Cerise electric background story
  10/12/24
This. Plus they are always hugging and kissing you.
Bat Shit Crazy Floppy Market
  10/12/24
...
Fuchsia exciting range
  12/23/25
Wtf
purple hunting ground tattoo
  10/12/24
This is my life. Constant blue balls.
Cerise electric background story
  10/12/24
...
cheese-eating haunting coffee pot
  11/30/25
i'm married to the younger hotter sister, and the temptation...
...,,..;...,,..,..,...,,,;..,
  06/03/26
Is she a spicy Latina?
aromatic piazza
  10/12/24
...
chrome cuckoldry
  11/30/25
Youngest SiL is trim, has a 180 ass and is always kissing me...
Bat Shit Crazy Floppy Market
  10/12/24
180
Glittery bronze crackhouse
  10/12/24
...
Violet bateful foreskin native
  10/12/24
twist: the sil was Catherine of aragorn
amethyst area dysfunction
  10/12/24
If first brother was childless then this is classic Levirate...
Red site macaca
  10/12/24
...
Violet bateful foreskin native
  10/12/24
He's literally the closest replacement for the guy. I can't ...
Red site macaca
  10/12/24
...
Violet bateful foreskin native
  10/12/24
You're doing it for the purpose of having children, through ...
Red site macaca
  10/13/24
are we talking about your wife's sister or your brother's wi...
Bearded opaque telephone personal credit line
  10/12/24
How many times do we have to go over this.
Cobalt roommate son of senegal
  10/12/24
...
hilarious peach milk pocket flask
  10/12/24
...
chrome cuckoldry
  11/30/25
...
hilarious peach milk pocket flask
  12/23/25
...
high-end hospital
  12/23/25
...
Marvelous kitty office
  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
French Meetinghouse Dog Poop
  10/12/24
voice of reason as always cbtp
purple hunting ground tattoo
  10/12/24
not as deranged as brother-in-law
bearded dashing principal's office roast beef
  10/12/24
Wife’s sister or your bros wife = deranged wife&rsq...
Lime infuriating nibblets trailer park
  12/23/25


Poast new message in this thread



Reply Favorite

Date: October 11th, 2024 4:34 PM
Author: purple hunting ground tattoo

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

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



Reply Favorite

Date: October 11th, 2024 4:34 PM
Author: aphrodisiac bright pit affirmative action

I dunno. What if she has a nice ass?

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



Reply Favorite

Date: October 11th, 2024 4:35 PM
Author: cheese-eating haunting coffee pot

more detail plz

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



Reply Favorite

Date: October 11th, 2024 4:37 PM
Author: aphrodisiac bright pit affirmative action



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



Reply Favorite

Date: October 11th, 2024 4:40 PM
Author: black theatre

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=2id.#48188001)



Reply Favorite

Date: October 11th, 2024 4:41 PM
Author: Lake Spot Elastic Band

do u know what a sister in law is?

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



Reply Favorite

Date: October 11th, 2024 4:44 PM
Author: Ungodly Double Fault

he's watched too much porn

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



Reply Favorite

Date: October 11th, 2024 7:51 PM
Author: black theatre

Objection, nonresponsive

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



Reply Favorite

Date: December 23rd, 2025 2:44 AM
Author: high-end hospital



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



Reply Favorite

Date: October 11th, 2024 7:50 PM
Author: black theatre

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=2id.#48188616)



Reply Favorite

Date: October 11th, 2024 8:22 PM
Author: silver community account

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=2id.#48188745)



Reply Favorite

Date: October 11th, 2024 4:42 PM
Author: Stirring forum athletic conference

sleeping with anyone within your orbit of friends & family is insane and doomed

(http://www.autoadmit.com/thread.php?thread_id=5610171&forum_id=2id.#48188009)



Reply Favorite

Date: October 11th, 2024 4:50 PM
Author: purple hunting ground tattoo

mostly cr

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



Reply Favorite

Date: October 12th, 2024 3:21 PM
Author: Passionate home ladyboy



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



Reply Favorite

Date: December 23rd, 2025 2:58 AM
Author: fiercely-loyal rehab dingle berry

this is exactly why I never sleep with my wife

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



Reply Favorite

Date: October 11th, 2024 4:44 PM
Author: Ungodly Double Fault

depends on if your wife is dead or not

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



Reply Favorite

Date: October 11th, 2024 4:44 PM
Author: Stirring forum athletic conference

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

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



Reply Favorite

Date: November 30th, 2025 4:48 PM
Author: chrome cuckoldry



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



Reply Favorite

Date: October 11th, 2024 4:48 PM
Author: Fuchsia exciting range

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

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



Reply Favorite

Date: October 11th, 2024 8:14 PM
Author: Fragrant temple goyim

(martin brodeur)

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



Reply Favorite

Date: October 12th, 2024 10:56 AM
Author: Cerise electric background story

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=2id.#48189844)



Reply Favorite

Date: October 12th, 2024 11:38 AM
Author: Bat Shit Crazy Floppy Market

This. Plus they are always hugging and kissing you.

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



Reply Favorite

Date: December 23rd, 2025 6:52 AM
Author: Fuchsia exciting range



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



Reply Favorite

Date: October 12th, 2024 3:45 PM
Author: purple hunting ground tattoo

Wtf

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



Reply Favorite

Date: October 12th, 2024 5:01 PM
Author: Cerise electric background story

This is my life. Constant blue balls.

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



Reply Favorite

Date: November 30th, 2025 4:44 PM
Author: cheese-eating haunting coffee pot



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



Reply Favorite

Date: October 12th, 2024 11:41 AM
Author: aromatic piazza

Is she a spicy Latina?

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



Reply Favorite

Date: November 30th, 2025 4:48 PM
Author: chrome cuckoldry



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



Reply Favorite

Date: October 12th, 2024 11:44 AM
Author: Bat Shit Crazy Floppy Market

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=2id.#48189964)



Reply Favorite

Date: October 12th, 2024 3:45 PM
Author: Glittery bronze crackhouse

180

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



Reply Favorite

Date: October 12th, 2024 11:48 AM
Author: Violet bateful foreskin native



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



Reply Favorite

Date: October 12th, 2024 3:17 PM
Author: amethyst area dysfunction

twist: the sil was Catherine of aragorn

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



Reply Favorite

Date: October 12th, 2024 3:20 PM
Author: Red site macaca

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=2id.#48190659)



Reply Favorite

Date: October 12th, 2024 3:25 PM
Author: Violet bateful foreskin native



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



Reply Favorite

Date: October 12th, 2024 3:34 PM
Author: Red site macaca

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=2id.#48190707)



Reply Favorite

Date: October 12th, 2024 3:38 PM
Author: Violet bateful foreskin native



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



Reply Favorite

Date: October 13th, 2024 12:04 AM
Author: Red site macaca

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=2id.#48191875)



Reply Favorite

Date: October 12th, 2024 11:50 AM
Author: Bearded opaque telephone personal credit line

are we talking about your wife's sister or your brother's wife?

(http://www.autoadmit.com/thread.php?thread_id=5610171&forum_id=2id.#48189984)



Reply Favorite

Date: October 12th, 2024 11:52 AM
Author: Cobalt roommate son of senegal

How many times do we have to go over this.

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



Reply Favorite

Date: October 12th, 2024 4:01 PM
Author: hilarious peach milk pocket flask



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



Reply Favorite

Date: November 30th, 2025 4:48 PM
Author: chrome cuckoldry



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



Reply Favorite

Date: December 23rd, 2025 2:34 AM
Author: hilarious peach milk pocket flask



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



Reply Favorite

Date: December 23rd, 2025 2:46 AM
Author: high-end hospital



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



Reply Favorite

Date: December 23rd, 2025 6:43 AM
Author: Marvelous kitty office



(http://www.autoadmit.com/thread.php?thread_id=5610171&forum_id=2id.#49533170)



Reply Favorite

Date: June 3rd, 2026 3:03 PM
Author: gedood persoon



(http://www.autoadmit.com/thread.php?thread_id=5610171&forum_id=2id.#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=2id.#49913235)



Reply Favorite

Date: June 3rd, 2026 3:20 PM
Author: Mailer Daemon



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



Reply Favorite

Date: October 12th, 2024 11:51 AM
Author: French Meetinghouse Dog Poop

yes

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



Reply Favorite

Date: October 12th, 2024 4:02 PM
Author: purple hunting ground tattoo

voice of reason as always cbtp

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



Reply Favorite

Date: October 12th, 2024 11:57 AM
Author: bearded dashing principal's office roast beef

not as deranged as brother-in-law

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



Reply Favorite

Date: December 23rd, 2025 7:03 AM
Author: Lime infuriating nibblets trailer park

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=2id.#49533184)