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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?
Submissive therapy
  10/11/24
I dunno. What if she has a nice ass?
Bateful Bright Locale Friendly Grandma
  10/11/24
more detail plz
stubborn haunted graveyard den
  10/11/24
...
Bateful Bright Locale Friendly Grandma
  10/11/24
It probably depends on how much you hate your bio parent and...
wonderful university
  10/11/24
do u know what a sister in law is?
bossy lascivious whorehouse
  10/11/24
he's watched too much porn
razzmatazz point selfie
  10/11/24
Objection, nonresponsive
wonderful university
  10/11/24
...
Aromatic hell
  12/23/25
I do but I prefer fantasizing about my non-existent step sis...
wonderful university
  10/11/24
Not sure if this analysis is on point. The less it's justifi...
stimulating toilet seat resort
  10/11/24
sleeping with anyone within your orbit of friends & fami...
dashing property jewess
  10/11/24
mostly cr
Submissive therapy
  10/11/24
...
mentally impaired irate marketing idea
  10/12/24
this is exactly why I never sleep with my wife
Marvelous patrolman
  12/23/25
depends on if your wife is dead or not
razzmatazz point selfie
  10/11/24
i believe this is colloquially known as "the biden rule...
dashing property jewess
  10/11/24
...
Pungent school
  11/30/25
only if you don't take pictures to share with us
Swollen Sickened Ticket Booth Jap
  10/11/24
(martin brodeur)
charismatic meetinghouse
  10/11/24
Anyone who doesn't at least understand the temptation doesn'...
Glittery Topaz Set
  10/12/24
This. Plus they are always hugging and kissing you.
multi-colored turquoise stead immigrant
  10/12/24
...
Swollen Sickened Ticket Booth Jap
  12/23/25
Wtf
Submissive therapy
  10/12/24
This is my life. Constant blue balls.
Glittery Topaz Set
  10/12/24
...
stubborn haunted graveyard den
  11/30/25
i'm married to the younger hotter sister, and the temptation...
...,,..;...,,..,..,...,,,;..,
  06/03/26
Is she a spicy Latina?
Hyperactive temple mad cow disease
  10/12/24
...
Pungent school
  11/30/25
Youngest SiL is trim, has a 180 ass and is always kissing me...
multi-colored turquoise stead immigrant
  10/12/24
180
Abusive iridescent nursing home dingle berry
  10/12/24
...
offensive abode bbw
  10/12/24
twist: the sil was Catherine of aragorn
Ultramarine Exhilarant Antidepressant Drug Gas Station
  10/12/24
If first brother was childless then this is classic Levirate...
Heady mustard chapel
  10/12/24
...
offensive abode bbw
  10/12/24
He's literally the closest replacement for the guy. I can't ...
Heady mustard chapel
  10/12/24
...
offensive abode bbw
  10/12/24
You're doing it for the purpose of having children, through ...
Heady mustard chapel
  10/13/24
are we talking about your wife's sister or your brother's wi...
internet-worthy arrogant pistol toaster
  10/12/24
How many times do we have to go over this.
Vermilion Police Squad Church
  10/12/24
...
mind-boggling bipolar sanctuary elastic band
  10/12/24
...
Pungent school
  11/30/25
...
mind-boggling bipolar sanctuary elastic band
  12/23/25
...
Aromatic hell
  12/23/25
...
Orchid alcoholic orchestra pit shitlib
  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
Chocolate pit indirect expression
  10/12/24
voice of reason as always cbtp
Submissive therapy
  10/12/24
not as deranged as brother-in-law
arousing boistinker
  10/12/24
Wife’s sister or your bros wife = deranged wife&rsq...
Odious indecent travel guidebook
  12/23/25


Poast new message in this thread



Reply Favorite

Date: October 11th, 2024 4:34 PM
Author: Submissive therapy

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: Bateful Bright Locale Friendly Grandma

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: stubborn haunted graveyard den

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: Bateful Bright Locale Friendly Grandma



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



Reply Favorite

Date: October 11th, 2024 4:40 PM
Author: wonderful university

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: bossy lascivious whorehouse

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: razzmatazz point selfie

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: wonderful university

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: Aromatic hell



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



Reply Favorite

Date: October 11th, 2024 7:50 PM
Author: wonderful university

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: stimulating toilet seat resort

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: dashing property jewess

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: Submissive therapy

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: mentally impaired irate marketing idea



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



Reply Favorite

Date: December 23rd, 2025 2:58 AM
Author: Marvelous patrolman

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: razzmatazz point selfie

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: dashing property jewess

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: Pungent school



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



Reply Favorite

Date: October 11th, 2024 4:48 PM
Author: Swollen Sickened Ticket Booth Jap

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: charismatic meetinghouse

(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: Glittery Topaz Set

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: multi-colored turquoise stead immigrant

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: Swollen Sickened Ticket Booth Jap



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



Reply Favorite

Date: October 12th, 2024 3:45 PM
Author: Submissive therapy

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: Glittery Topaz Set

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: stubborn haunted graveyard den



(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: Hyperactive temple mad cow disease

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: Pungent school



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



Reply Favorite

Date: October 12th, 2024 11:44 AM
Author: multi-colored turquoise stead immigrant

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: Abusive iridescent nursing home dingle berry

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: offensive abode bbw



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



Reply Favorite

Date: October 12th, 2024 3:17 PM
Author: Ultramarine Exhilarant Antidepressant Drug Gas Station

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: Heady mustard chapel

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: offensive abode bbw



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



Reply Favorite

Date: October 12th, 2024 3:34 PM
Author: Heady mustard chapel

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: offensive abode bbw



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



Reply Favorite

Date: October 13th, 2024 12:04 AM
Author: Heady mustard chapel

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: internet-worthy arrogant pistol toaster

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 Police Squad Church

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: mind-boggling bipolar sanctuary elastic band



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



Reply Favorite

Date: November 30th, 2025 4:48 PM
Author: Pungent school



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



Reply Favorite

Date: December 23rd, 2025 2:34 AM
Author: mind-boggling bipolar sanctuary elastic band



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



Reply Favorite

Date: December 23rd, 2025 2:46 AM
Author: Aromatic hell



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



Reply Favorite

Date: December 23rd, 2025 6:43 AM
Author: Orchid alcoholic orchestra pit shitlib



(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: Chocolate pit indirect expression

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: Submissive therapy

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: arousing boistinker

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: Odious indecent travel guidebook

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)