On the 10th of August, after National Slap Your Brother Day, is National Slap Your sister day. It is a day where you, as it says in the title, a day to slap your female siblings.
Me:"It's National Slap Your Sister Day"
My sister: Shit...
by EpicCommie August 9, 2021
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"Treating your girlfriend like your sister" When one treats his girlfriend as he would treat his sister with care and respect!
by Monstercock January 7, 2021
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Question to be made when you feel treated unfairly, made responsible for something you didn´t do, or ordered to do something you feel not responsible for.
"Ok Alysa, take the dog for a walk"
"But Mom...did i kill your sister or something?
by rperazag June 15, 2010
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november 2-3 especially when there name is carys yates and they are 16 make sure to slap em silly
happy national punch your sister across the face day”
by devoted christian November 2, 2020
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Ian you kiss your sisters cat with that mouth: It means when a guy like **Ian** Kisses a cat that belongs to his sister.
Dude 1: Ian you kiss your sisters cat with that mouth?

Ian: You know it!
by #BecomeAPlayerToday March 31, 2021
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This holiday of joy is celebrated on 25th December. Have fun people!
Jeff: what you doing today bro?
Bro: What do you think it’s National Threesome with your Sister and Mom day
by Hikari 𓆏#696 October 14, 2021
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