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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?
Irate Lascivious Feces
  10/11/24
I dunno. What if she has a nice ass?
red seedy french chef dragon
  10/11/24
more detail plz
Passionate ratface church building
  10/11/24
...
red seedy french chef dragon
  10/11/24
It probably depends on how much you hate your bio parent and...
Exhilarant parlor
  10/11/24
do u know what a sister in law is?
adventurous azn
  10/11/24
he's watched too much porn
Ruddy stimulating theater people who are hurt
  10/11/24
Objection, nonresponsive
Exhilarant parlor
  10/11/24
...
Ocher startled temple
  12/23/25
I do but I prefer fantasizing about my non-existent step sis...
Exhilarant parlor
  10/11/24
Not sure if this analysis is on point. The less it's justifi...
comical indian lodge
  10/11/24
sleeping with anyone within your orbit of friends & fami...
Beady-eyed Sadistic Menage
  10/11/24
mostly cr
Irate Lascivious Feces
  10/11/24
...
Slap-happy Hall Regret
  10/12/24
this is exactly why I never sleep with my wife
carmine spot
  12/23/25
depends on if your wife is dead or not
Ruddy stimulating theater people who are hurt
  10/11/24
i believe this is colloquially known as "the biden rule...
Beady-eyed Sadistic Menage
  10/11/24
...
Gaped National Karate
  11/30/25
only if you don't take pictures to share with us
Azure stage keepsake machete
  10/11/24
(martin brodeur)
Titillating Amber Office Kitty
  10/11/24
Anyone who doesn't at least understand the temptation doesn'...
Grizzly Misunderstood Lay
  10/12/24
This. Plus they are always hugging and kissing you.
emerald galvanic hospital
  10/12/24
...
Azure stage keepsake machete
  12/23/25
Wtf
Irate Lascivious Feces
  10/12/24
This is my life. Constant blue balls.
Grizzly Misunderstood Lay
  10/12/24
...
Passionate ratface church building
  11/30/25
i'm married to the younger hotter sister, and the temptation...
...,,..;...,,..,..,...,,,;..,
  06/03/26
Is she a spicy Latina?
blathering blue pit mood
  10/12/24
...
Gaped National Karate
  11/30/25
Youngest SiL is trim, has a 180 ass and is always kissing me...
emerald galvanic hospital
  10/12/24
180
Territorial antidepressant drug
  10/12/24
...
Topaz vibrant theatre filthpig
  10/12/24
twist: the sil was Catherine of aragorn
fuchsia station
  10/12/24
If first brother was childless then this is classic Levirate...
swashbuckling aqua philosopher-king
  10/12/24
...
Topaz vibrant theatre filthpig
  10/12/24
He's literally the closest replacement for the guy. I can't ...
swashbuckling aqua philosopher-king
  10/12/24
...
Topaz vibrant theatre filthpig
  10/12/24
You're doing it for the purpose of having children, through ...
swashbuckling aqua philosopher-king
  10/13/24
are we talking about your wife's sister or your brother's wi...
gold nudist hominid nowag
  10/12/24
How many times do we have to go over this.
Provocative unholy famous landscape painting
  10/12/24
...
well-lubricated impertinent psychic stage
  10/12/24
...
Gaped National Karate
  11/30/25
...
well-lubricated impertinent psychic stage
  12/23/25
...
Ocher startled temple
  12/23/25
...
Orchid kitty cat tanning salon
  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
Indigo area knife
  10/12/24
voice of reason as always cbtp
Irate Lascivious Feces
  10/12/24
not as deranged as brother-in-law
violet stead
  10/12/24
Wife’s sister or your bros wife = deranged wife&rsq...
Bull headed fishy gaming laptop
  12/23/25


Poast new message in this thread



Reply Favorite

Date: October 11th, 2024 4:34 PM
Author: Irate Lascivious Feces

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: red seedy french chef dragon

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: Passionate ratface church building

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: red seedy french chef dragon



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



Reply Favorite

Date: October 11th, 2024 4:40 PM
Author: Exhilarant parlor

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: adventurous azn

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: Ruddy stimulating theater people who are hurt

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: Exhilarant parlor

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: Ocher startled temple



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



Reply Favorite

Date: October 11th, 2024 7:50 PM
Author: Exhilarant parlor

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: comical indian lodge

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: Beady-eyed Sadistic Menage

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: Irate Lascivious Feces

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: Slap-happy Hall Regret



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



Reply Favorite

Date: December 23rd, 2025 2:58 AM
Author: carmine spot

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: Ruddy stimulating theater people who are hurt

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: Beady-eyed Sadistic Menage

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: Gaped National Karate



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



Reply Favorite

Date: October 11th, 2024 4:48 PM
Author: Azure stage keepsake machete

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: Titillating Amber Office Kitty

(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: Grizzly Misunderstood Lay

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: emerald galvanic hospital

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: Azure stage keepsake machete



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



Reply Favorite

Date: October 12th, 2024 3:45 PM
Author: Irate Lascivious Feces

Wtf

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



Reply Favorite

Date: October 12th, 2024 5:01 PM
Author: Grizzly Misunderstood Lay

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: Passionate ratface church building



(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: blathering blue pit mood

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: Gaped National Karate



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



Reply Favorite

Date: October 12th, 2024 11:44 AM
Author: emerald galvanic hospital

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: Territorial antidepressant drug

180

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



Reply Favorite

Date: October 12th, 2024 11:48 AM
Author: Topaz vibrant theatre filthpig



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



Reply Favorite

Date: October 12th, 2024 3:17 PM
Author: fuchsia station

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: swashbuckling aqua philosopher-king

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: Topaz vibrant theatre filthpig



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



Reply Favorite

Date: October 12th, 2024 3:34 PM
Author: swashbuckling aqua philosopher-king

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: Topaz vibrant theatre filthpig



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



Reply Favorite

Date: October 13th, 2024 12:04 AM
Author: swashbuckling aqua philosopher-king

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: gold nudist hominid nowag

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: Provocative unholy famous landscape painting

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: well-lubricated impertinent psychic stage



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



Reply Favorite

Date: November 30th, 2025 4:48 PM
Author: Gaped National Karate



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



Reply Favorite

Date: December 23rd, 2025 2:34 AM
Author: well-lubricated impertinent psychic stage



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



Reply Favorite

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



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



Reply Favorite

Date: December 23rd, 2025 6:43 AM
Author: Orchid kitty cat tanning salon



(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: Indigo area knife

yes

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



Reply Favorite

Date: October 12th, 2024 4:02 PM
Author: Irate Lascivious Feces

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: violet stead

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: Bull headed fishy gaming laptop

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)