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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?
Cobalt Internal Respiration Mother
  10/11/24
I dunno. What if she has a nice ass?
racy sick institution ape
  10/11/24
more detail plz
beady-eyed disgusting kitty halford
  10/11/24
...
racy sick institution ape
  10/11/24
It probably depends on how much you hate your bio parent and...
Lascivious filthpig
  10/11/24
do u know what a sister in law is?
Heady trump supporter
  10/11/24
he's watched too much porn
Alcoholic judgmental piazza
  10/11/24
Objection, nonresponsive
Lascivious filthpig
  10/11/24
...
Concupiscible forum
  12/23/25
I do but I prefer fantasizing about my non-existent step sis...
Lascivious filthpig
  10/11/24
Not sure if this analysis is on point. The less it's justifi...
magenta multi-colored brethren
  10/11/24
sleeping with anyone within your orbit of friends & fami...
slap-happy effete den
  10/11/24
mostly cr
Cobalt Internal Respiration Mother
  10/11/24
...
Garnet deer antler
  10/12/24
this is exactly why I never sleep with my wife
Razzmatazz hall masturbator
  12/23/25
depends on if your wife is dead or not
Alcoholic judgmental piazza
  10/11/24
i believe this is colloquially known as "the biden rule...
slap-happy effete den
  10/11/24
...
Aquamarine soul-stirring orchestra pit jap
  11/30/25
only if you don't take pictures to share with us
ultramarine bipolar whorehouse
  10/11/24
(martin brodeur)
Chest-beating location
  10/11/24
Anyone who doesn't at least understand the temptation doesn'...
Maniacal ruby garrison
  10/12/24
This. Plus they are always hugging and kissing you.
Dark Razzle-dazzle Persian
  10/12/24
...
ultramarine bipolar whorehouse
  12/23/25
Wtf
Cobalt Internal Respiration Mother
  10/12/24
This is my life. Constant blue balls.
Maniacal ruby garrison
  10/12/24
...
beady-eyed disgusting kitty halford
  11/30/25
Is she a spicy Latina?
Naked Stirring National Old Irish Cottage
  10/12/24
...
Aquamarine soul-stirring orchestra pit jap
  11/30/25
Youngest SiL is trim, has a 180 ass and is always kissing me...
Dark Razzle-dazzle Persian
  10/12/24
180
Light fantasy-prone address pocket flask
  10/12/24
...
aromatic sandwich
  10/12/24
twist: the sil was Catherine of aragorn
vivacious abode macaca
  10/12/24
If first brother was childless then this is classic Levirate...
Transparent kitchen
  10/12/24
...
aromatic sandwich
  10/12/24
He's literally the closest replacement for the guy. I can't ...
Transparent kitchen
  10/12/24
...
aromatic sandwich
  10/12/24
You're doing it for the purpose of having children, through ...
Transparent kitchen
  10/13/24
are we talking about your wife's sister or your brother's wi...
hairraiser drab psychic gas station
  10/12/24
How many times do we have to go over this.
Curious Zippy Fat Ankles
  10/12/24
...
180 flushed cuckoldry coffee pot
  10/12/24
...
Aquamarine soul-stirring orchestra pit jap
  11/30/25
...
180 flushed cuckoldry coffee pot
  12/23/25
...
Concupiscible forum
  12/23/25
...
mauve talented tanning salon
  12/23/25
yes
Aphrodisiac state
  10/12/24
voice of reason as always cbtp
Cobalt Internal Respiration Mother
  10/12/24
not as deranged as brother-in-law
Burgundy insanely creepy faggot firefighter
  10/12/24
Wife’s sister or your bros wife = deranged wife&rsq...
Appetizing goal in life
  12/23/25


Poast new message in this thread



Reply Favorite

Date: October 11th, 2024 4:34 PM
Author: Cobalt Internal Respiration Mother

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: racy sick institution ape

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: beady-eyed disgusting kitty halford

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: racy sick institution ape



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



Reply Favorite

Date: October 11th, 2024 4:40 PM
Author: Lascivious filthpig

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: Heady trump supporter

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: Alcoholic judgmental piazza

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: Lascivious filthpig

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: Concupiscible forum



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



Reply Favorite

Date: October 11th, 2024 7:50 PM
Author: Lascivious filthpig

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: magenta multi-colored brethren

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: slap-happy effete den

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: Cobalt Internal Respiration Mother

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: Garnet deer antler



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



Reply Favorite

Date: December 23rd, 2025 2:58 AM
Author: Razzmatazz hall masturbator

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: Alcoholic judgmental piazza

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: slap-happy effete den

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: Aquamarine soul-stirring orchestra pit jap



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



Reply Favorite

Date: October 11th, 2024 4:48 PM
Author: ultramarine bipolar whorehouse

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: Chest-beating location

(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: Maniacal ruby garrison

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: Dark Razzle-dazzle Persian

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: ultramarine bipolar whorehouse



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



Reply Favorite

Date: October 12th, 2024 3:45 PM
Author: Cobalt Internal Respiration Mother

Wtf

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



Reply Favorite

Date: October 12th, 2024 5:01 PM
Author: Maniacal ruby garrison

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: beady-eyed disgusting kitty halford



(http://www.autoadmit.com/thread.php?thread_id=5610171&forum_id=2"#49472629)



Reply Favorite

Date: October 12th, 2024 11:41 AM
Author: Naked Stirring National Old Irish Cottage

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: Aquamarine soul-stirring orchestra pit jap



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



Reply Favorite

Date: October 12th, 2024 11:44 AM
Author: Dark Razzle-dazzle Persian

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: Light fantasy-prone address pocket flask

180

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



Reply Favorite

Date: October 12th, 2024 11:48 AM
Author: aromatic sandwich



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



Reply Favorite

Date: October 12th, 2024 3:17 PM
Author: vivacious abode macaca

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: Transparent kitchen

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: aromatic sandwich



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



Reply Favorite

Date: October 12th, 2024 3:34 PM
Author: Transparent kitchen

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: aromatic sandwich



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



Reply Favorite

Date: October 13th, 2024 12:04 AM
Author: Transparent kitchen

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: hairraiser drab psychic gas station

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: Curious Zippy Fat Ankles

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: 180 flushed cuckoldry coffee pot



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



Reply Favorite

Date: November 30th, 2025 4:48 PM
Author: Aquamarine soul-stirring orchestra pit jap



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



Reply Favorite

Date: December 23rd, 2025 2:34 AM
Author: 180 flushed cuckoldry coffee pot



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



Reply Favorite

Date: December 23rd, 2025 2:46 AM
Author: Concupiscible forum



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



Reply Favorite

Date: December 23rd, 2025 6:43 AM
Author: mauve talented tanning salon



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



Reply Favorite

Date: October 12th, 2024 11:51 AM
Author: Aphrodisiac state

yes

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



Reply Favorite

Date: October 12th, 2024 4:02 PM
Author: Cobalt Internal Respiration Mother

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: Burgundy insanely creepy faggot firefighter

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: Appetizing goal in life

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)