step-co-sibling-in-law

My step-co-sibling-in-law is a good person.
by Wonbig October 13, 2021
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Statute of limitations is six months to get retribution for photos, pranks and other forms of humiliation. After the six month period has expired any retribution is considered a new act of warfare.
Brother -"I was just getting you back for those pictures you posted."

Sister- "According to the Sibling Wars Rules of Engagement, the statute of limitations has run out so now your screwed!"
by lmft August 14, 2011
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A national holiday where you can slap your siblings! It’s a wonderful day.
“Hey, sister.”
“Hey, what’s up
“Happy national slap your sibling day!”
“Wha-“
*slaps*
by yourveryownmother October 28, 2020
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" Halloween is also national hit your sibling day"
by Klaus209 October 31, 2019
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When it hits the 16th of November, don't forget about "National Slap Your Sibling Day".

Stepsiblings included.
Have a slapping time on the 16th! A day to mark in your calendar.
"Ow, why did you hit me?"
"It's National Slap Your Sibling Day!"
by UrbanWriter123 November 16, 2021
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when your nutted down your siblings throat and they are about to tell your parents you throw your sibling.
I nutted down George’s throat so he went to tell Mum so I threw him. (It was National Throw Your Sibling Day after all).
by thebear06__ November 01, 2019
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On October 4th, anybody who has a younger sibling can slap them, and they cannot fight back, cry, or complain. They must accept the slap.
Older brother: Hey, guess what?
Younger brother: What?
Older brother: It's Slap Your Younger Sibling Day!
Younger brother: Fine, you can slap me.
by delta! October 04, 2021
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